Repository | Directory | Profile

Gottlob Frege
1848 (Wismar) — 1925 (Bad Kleinen)
Christian Damböck, Deutscher empirismus
2020
Vienna Circle Institute Yearbook

Spiritual expression and the promise of phenomenology
2020
in: The subject(s) of phenomenology, Dordrecht : Springer

Frege's philosophy of geometry
2019
Synthese 196/3

Le schématisme transcendantal dans l'arithmétique
2019
Meta 11/2
Philosophy of notation in the 19th century
2019
in: Peirce and Husserl, Dordrecht : Springer

The role of truth-values in indirect meanings
2019
in: Language, music and computing, Dordrecht : Springer

A context principle for the twenty-first century
2018
in: Eva Picardi on language, analysis and history, Dordrecht : Springer

Frege on Dichtung and elucidation
2018
in: New essays on Frege, Dordrecht : Springer

Frege's recognition criterion for thoughts and its problems
2018
Synthese 195/6

Frege's unquestioned starting point
2018
in: New essays on Frege, Dordrecht : Springer

Frege, the normativity of logic, and the Kantian tradition
2018
in: New essays on Frege, Dordrecht : Springer

Necessary a posteriori identity truths
2018
Axiomathes 28/1

Semantic and pragmatic aspects of Frege's approach to fictional discourse
2018
in: New essays on Frege, Dordrecht : Springer

The absence of multiple universes of discourse in the 1936 Tarski consequence-definition paper
2018
in: The Lvov-Warsaw school, Dordrecht : Springer

The Dichtung of analytic philosophy
2018
in: New essays on Frege, Dordrecht : Springer

Thin reference, metaontological minimalism and abstraction principles
2018
in: Eva Picardi on language, analysis and history, Dordrecht : Springer

Truth, ascriptions of truth, and grounds of truth ascriptions
2018
in: Eva Picardi on language, analysis and history, Dordrecht : Springer

Was Frege a logicist for arithmetic?
2018
in: Eva Picardi on language, analysis and history, Dordrecht : Springer

Why believe infinite sets exist?
2018
Axiomathes 28/4

Why is Frege's judgment stroke superfluous?
2018
in: New essays on Frege, Dordrecht : Springer

Brentano's methodology as a path through the divide
2017
Axiomathes 27/5

Does reason evolve? (does the reasoning in mathematics evolve?)
2017
in: Humanizing mathematics and its philosophy, Basel : Birkhäuser

Frege and Carnap on the normativity of logic
2017
Synthese 194/1

How to speak about history of analytic philosophy
2017
in: The significance of the Lvov-Warsaw school in the European culture, Dordrecht : Springer

The history and prehistory of natural-language semantics
2017
in: Innovations in the history of analytical philosophy, Basingstoke : Palgrave Macmillan

The Lvov-Warsaw school and Austro-German philosophers
2017
in: The significance of the Lvov-Warsaw school in the European culture, Dordrecht : Springer

The relevance of language for the problem of representation
2017
in: Representation and reality in humans, other living organisms and intelligent machines, Dordrecht : Springer

Two fundamentally different perspectives on time
2017
Axiomathes 27/3

Was Buridan a "psychologist" in his logic?
2017
in: Questions on the soul by John Buridan and others, Dordrecht : Springer

What is the nature of mathematical–logical objects?
2017
Axiomathes 27/1

Frege and the Aristotelian model of science
2016
in: Early analytic philosophy, Dordrecht : Springer

Frege on mathematical progress
2016
in: Early analytic philosophy, Dordrecht : Springer

Frege the Carnapian and Carnap the fregean
2016
in: Early analytic philosophy, Dordrecht : Springer

Later Wittgenstein on the logicist definition of number
2016
in: Early analytic philosophy, Dordrecht : Springer

Naturalizing natural deduction
2016
in: Modern logic 1850-1950, East and West, Basel : Birkhäuser

On the nature, status, and proof of Hume's principle in Frege's logicist project
2016
in: Early analytic philosophy, Dordrecht : Springer

The context of the development of Carnap's views on logic up to the Aufbau
2016
in: Influences on the Aufbau, Dordrecht : Springer

The ontological implications of neo-Fregeanism
2016
Daimon Revista Internacional de Filosofia 69

Conception, sense, and reference in Peircean semiotics
2015
Synthese 192/4

2015
in: Dummett on analytical philosophy, Dordrecht : Springer
Dummett, the Frege-Husserl exchange and the analytical tradition
2015
in: Dummett on analytical philosophy, Dordrecht : Springer
2015
in: Dummett on analytical philosophy, Dordrecht : Springer
Frege's Grundgesetze and a reassessment of predicativity
2015
in: From logic to practice, Dordrecht : Springer

2015
in: Dummett on analytical philosophy, Dordrecht : Springer
2015
in: Dummett on analytical philosophy, Dordrecht : Springer
Making knowledge of meaning explicit
2015
in: Dummett on analytical philosophy, Dordrecht : Springer
Meaning and Dummett's Austrians
2015
in: Dummett on analytical philosophy, Dordrecht : Springer
On universality and formality in 19th century symbolic logic
2015
in: The road to universal logic I, Basel : Birkhäuser

Peirce's role in the history of logic
2015
in: The road to universal logic II, Basel : Birkhäuser

Putting Davidson's semantics to work to solve Frege's paradox on concept and object
2015
in: Unifying the philosophy of truth, Dordrecht : Springer

Seeking the logical basis of metaphysics
2015
in: Dummett on analytical philosophy, Dordrecht : Springer
Some epistemological ramifications of the Borel–Kolmogorov paradox
2015
Synthese 192/3

The paradox of objectless presentations in early phenomenology
2015
Studia Phaenomenologica 15

Context and consequence. an intercontextual substructural logic
2014
Synthese 191/15

Frege's logicism and the neo-fregean project
2014
Axiomathes 24/2
Is Church's picture of Frege a good one?
2014
Philosophia Scientiae 18/3

2014
Axiomathes 24/2
Un acercamiento preliminar a la semántica fregeana
2013-2014
Invenio 31-32
Bourdieus Habitusbegriff und Wittgensteins Sprachphilosophie
2013
in: Pierre Bourdieus Konzeption des Habitus, Dordrecht : Springer

Conceptual analysis and epistemic progress
2013
Synthese 190/15

De la sémantique pragmatique au contextualisme
2013
Corela Special issue 14/HS

Die kommunikative Konstruktion der Mathematik
2013
in: Kommunikativer Konstruktivismus, Dordrecht : Springer

Frege and Russell on assertion
2013
in: Judgement and the epistemic foundation of logic, Dordrecht : Springer

Judgement and truth in the early Wittgenstein
2013
in: Judgement and truth in early analytic philosophy and phenomenology, Dordrecht : Springer

L'interprétation du sens des énoncés. Une lecture contextualiste
2013
Methodos 13

Merely entertaining a thought, judging and asserting
2013
in: Judgement and truth in early analytic philosophy and phenomenology, Dordrecht : Springer

Parts, classes and parts of classes
2013
Synthese 190/4

The many faces of psychoontology
2013
Axiomathes 23/3
The Russell-Wittgenstein dispute
2013
in: Judgement and truth in early analytic philosophy and phenomenology, Dordrecht : Springer

"To be" o "esse"? La questione dell'essere nel tomismo analitico
2012
Rivista di estetica 49

Diagrammatic Reasoning in Frege's Begriffsschrift
2012
Synthese 186/1

2012
in: Crossing Borders, Wien : Oesterreichische Gesellschaft für Philosophie
Husserl's conception of physical theories and physical geometry in the time of the prolegomena
2012
Axiomathes Special issue 22/1
Relativized propositions and the Fregean orthodoxy
2012
Philosophy and Phenomenological Research 84/3
Rudolf Carnap and Wilhelm Dilthey
2012
in: Rudolf Carnap and the legacy of logical empiricism, Dordrecht : Springer

The construction of the logical world
2012
in: Crossing Borders, Wien : Oesterreichische Gesellschaft für Philosophie
Wogegen wandte sich Husserl 1891?
2012
Husserl Studies 28/2

Frege's puzzle and descriptive enrichment
2011
Philosophy and Phenomenological Research 83/2
Frege-Wittgenstein correspondence
2011
in: Interactive Wittgenstein, Dordrecht : Springer

How not to avoid wishful thinking
2011
in: New waves in metaethics, Basingstoke : Palgrave Macmillan

Knowledge representation, the world wide web, and the evolution of logic
2011
Synthese 182/2

2011
Axiomathes 21/4
Prefatory note to the Frege-Wittgenstein correspondence
2011
in: Interactive Wittgenstein, Dordrecht : Springer

Some remarks on Hugh MacColl's notion of symbolic existence
2011
Philosophia Scientiae 15/1

The Frege-Wittgenstein correspondence
2011
in: Interactive Wittgenstein, Dordrecht : Springer

Chateaubriand's realist conception of logic
2010
Axiomathes 20/2-3
Consistency, models, and soundness
2010
Axiomathes 20/2-3
Formal methods in the philosophy of natural science
2010
in: The present situation in the philosophy of science, Dordrecht : Springer

Frege's Begriffsschrift as a Lingua characteristica
2010
Synthese 174/2

Husserl y Frege sobre los nombres propios estrictos y los indexicales
2010
Anuario Colombiano de Fenomenologiá 4
Il Contributo di Frege all'attuale dibattito sul naturalismo
2010
Rivista di estetica 44

Informational realism and world 3
2010
Knowledge, Technology & Policy 23/1-2

2010
Axiomathes 20/2-3
On fundamental differences between dependent and independent meanings
2010
Axiomathes 20/2-3
Ontology and methodology in analytic philosophy
2010
in: Theory and applications of ontology, Dordrecht : Springer

Preaxiomatic mathematical reasoning
2010
in: Explanation and proof in mathematics, Dordrecht : Springer

The analytic-synthetic distinction and the classical model of science
2010
Synthese 174/2

The bearable lightness of being
2010
Axiomathes 20/4
A repair of Frege's theory of thoughts
2009
Synthese 167/1

Bad company and neo-Fregean philosophy
2009
Synthese 170/3

Categories, structures, and the Frege-Hilbert controversy
2009
in: Logicism, intuitionism, and formalism, Dordrecht : Springer

Frege's context principle and reference to natural numbers
2009
in: Logicism, intuitionism, and formalism, Dordrecht : Springer

Leśniewski's systems and the Aristotelian model of science
2009
in: The Golden age of Polish philosophy, Dordrecht : Springer

Natural logicism via the logic of orderly pairing
2009
in: Logicism, intuitionism, and formalism, Dordrecht : Springer

Predication and cartographic representation
2009
Synthese 169/1

Protocol sentences for lite logicism
2009
in: Logicism, intuitionism, and formalism, Dordrecht : Springer

2009
Axiomathes 19/1
Tractarian objects and logical categories
2009
Synthese 167/1

Situating Frege's look into language
2008
The New Yearbook for Phenomenology and Phenomenological Philosophy 8
The unity of a tractarian fact
2007
Synthese 156/2

Existence and predication from Aristotle to Frege
2006
Philosophy and Phenomenological Research 73/2
Hume's principle and axiom v reconsidered
2006
Synthese 148/1

On Tichy's determiners and Zalta's abstract objects
2006
Axiomathes 16/4
Peirce's contributions to the 21st century
2006
in: Conceptual structures: inspiration and application, Dordrecht : Springer

Premières réflexions sur les rapports entre la logique symbolique et l'informatique
2006
Philosophia Scientiae 10/1

Proof-theoretic semantics for classical mathematics
2006
Synthese 148/3

The "Gray's elegy" argument, and the prospects for the theory of denoting concepts
2006
Synthese 152/1

Aggregate theory versus set theory
2005
Philosophia Scientiae 9/2

Amending Frege's Grundgesetze der Arithmetik
2005
Synthese 147/1

De Kant à Gentzen, en passant par Brouwer, Hilbert et Frege
2005
Philosophia Scientiae 9/2

Frege's permutation argument revisited
2005
Synthese 147/1

Indexical propositions and de re belief ascriptions
2005
Synthese 146/3

Philosophes du langage et autonymie
2005
Histoire Épistémologie Langage 27/1

Real numbers and set theory – extending the neo-Fregean programme beyond arithmetic
2005
Synthese 147/1

Reflections on Frege and Hilbert
2005
Synthese 147/1

Two-dimensional semantics and the articulation problem
2005
Synthese 143/3

Frege, neo-logicism and applied mathematics
2004
in: Induction and deduction in the sciences, Dordrecht : Springer

On the "Gray's elegy" argument and its bearing on Frege's theory of sense
2004
Philosophy and Phenomenological Research 69/2
Remarks about a "general science of reasoning"
2004
in: Induction and deduction in the sciences, Dordrecht : Springer

The dialogic of just being different
2004
in: Quantifiers, questions and quantum physics, Dordrecht : Springer

The implicit definition of the set-concept
2004
Synthese 138/3

To be a Fregean or to be a Husserlian
2004
in: Phenomenology: Critical concepts in philosophy III, London : Routledge
Two questions about the revival of Frege's programme
2004
in: Induction and deduction in the sciences, Dordrecht : Springer

C. Ortiz Hill, G. Rosado Haddock, Husserl or Frege? meaning, objectivity, and mathematics
2003
Husserl Studies 19/2

Gödel, Carnap and the Fregean heritage
2003
Synthese 137/1-2

On the meaning of Hilbert's consistency problem (Paris, 1900)
2003
Synthese 137/1-2

The concept of "psychologism" in Frege and Husserl
2003
in: Philosophy, psychology, and psychologism, Dordrecht : Springer

The extension of the concept abolished?
2003
in: Philosophy and logic in search of the Polish tradition, Dordrecht : Springer

The judgment stroke and the truth-predicate
2003
The New Yearbook for Phenomenology and Phenomenological Philosophy 3
Can arboreal knotwork help Blackburn out of Frege's abyss?
2002
Philosophy and Phenomenological Research 65/1
Le problème de l'abstraction en mathématique
2002
in: Husserl et Frege, Paris : Vrin
Tackling three of Frege's problems
2002
Axiomathes 13/1

2001
in: Hermann Weyl's "Raum — Zeit — Materie" and a general introduction to his scientific work, Basel : Birkhäuser

G. Frege sur la négation comme opposition sans force
2001
Revue de métaphysique et de morale 30
A reassessment of George Boole's theory of logic
2000
in: A Boole anthology, Dordrecht : Springer

Anaphora from Athens to Amsterdam
2000
in: Reference and anaphoric relations, Dordrecht : Springer

The reception of German scientific philosophy in North America
2000
in: Witches, scientists, philosophers, Dordrecht : Springer

The sociology of philosophical knowledge
2000
in: The sociology of philosophical knowledge, Dordrecht : Springer

Frege on "I", "now", "today" and some other linguistic devices
1999
Synthese 121/3

Propositions, numbers, and the problem of arbitrary identification
1999
Synthese 120/2

Bilgrami on belief and meaning
1998
Philosophy and Phenomenological Research 58/2
Hertz's philosophy of nature in Wittgenstein's Tractatus
1998
in: Heinrich Hertz, Dordrecht : Springer

The indexical character of names
1998
Synthese 114/2

The primacy of concepts and the priority of judgments in Frege's logic
1998
Grazer Philosophische Studien 56

Why Frege did not deserve his granum salis
1998
Grazer Philosophische Studien 55

1997
in: Encyclopedia of phenomenology, Dordrecht-Boston-London : Kluwer
Isolation and non-arbitrary division
1997
Synthese 112/3

Logicism revisited in the propositional fragment of Leśniewski's ontology
1997
in: Philosophy of mathematics today, Dordrecht : Springer


Philosophie der Bedeutung – Bedeutung als Bestimmung und Bestimmbarkeit
1997
Würzburg, Königshausen & Neumann
Platonism and metaphor in the texts of mathematics
1997
Man and World 30/4

Propositions in Bolzano and Frege
1997
Grazer Philosophische Studien 53

A formal ontology of situations
1996
in: Formal ontology, Dordrecht : Springer

1996
Les études philosophiques - nouvelle série 51/3
Erkenntnistheorie, Metaphysik und Ontologie in Freges Theorie von Sinn und Bedeutung
1996
Logos (Neue Folge) 3
Existence and correspondence-to-fact
1996
in: Formal ontology, Dordrecht : Springer

Frege über den Sinn des Wortes "ich"
1996
Grazer Philosophische Studien 51

Introduction. Brentano and his school
1996
in: The school of Franz Brentano, Dordrecht : Nijhoff

A category-theoretic approach to Aristotle's term logic, with special reference to syllogisms
1995
in: Québec studies in the philosophy of science, part I, Dordrecht : Springer

Geometry and generality in Frege's philosophy of arithmetic
1995
Synthese 102/3

1995
Les études philosophiques - nouvelle série 50/1
La lógica de la identidad en G. Frege
1995
Daimon Revista Internacional de Filosofia 10

Putnam's doctrine of natural kind words and Frege's doctrines of sense, reference and extension
1995
in: Frege, Dordrecht : Springer

The communication of first person thoughts
1995
in: Frege, Dordrecht : Springer

The Frege puzzle one more time
1995
in: Frege, Dordrecht : Springer

The next best thing to sense in Begriffsschrift
1995
in: Frege, Dordrecht : Springer

The sense and reference of evaluative terms
1995
in: Frege, Dordrecht : Springer

Three puzzles in Frege's theory of truth
1995
in: Frege, Dordrecht : Springer

Truth in Frege's "law of truth"
1995
Synthese 105/1

Why is Frege's puzzle still puzzling ?
1995
in: Frege, Dordrecht : Springer

Wittgenstein between philosophical grammar and psychology
1995
in: Wittgenstein, Dordrecht : Springer

Wittgenstein versus artificial intelligence?
1995
in: Science, mind and art, Dordrecht : Springer

Determinate meaning and analytic truth
1994
in: Living doubt, Dordrecht : Springer

Frege's attack on Husserl and Cantor
1994
The Monist 77
Freges These der Undefinierbarkeit von Wahrheit
1994
Grazer Philosophische Studien 47

Husserl and Frege on substitutivity
1994
in: Mind, meaning and mathematics, Dordrecht : Springer

The integrity of the mental act
1994
in: Mind, meaning and mathematics, Dordrecht : Springer

1994
in: Mind, meaning and mathematics, Dordrecht : Springer
What is the sense of phos and hes?
1994
Grazer Philosophische Studien 47

1993
Philosophy and Phenomenological Research 53
Sobre héroes, dioses y palabras
1993
Daimon Revista Internacional de Filosofia 6

What is non-fregean in the semantics of Wittgenstein'stractatus and why?
1993
Axiomathes 4/3

Conceptual realism versus quine on classes and higher-order logic
1992
Synthese 90/3

1992
in: Essais sur le langage et l'intentionnalité, Montréal : Bellarmin
Poincaré against the logicians
1992
Synthese 90/3

Some Remarks on the role of mental sentence in medieval semantics
1992
Histoire Épistémologie Langage 14/2

Wittgenstein and the analytic tradition
1992
in: Essays on philosophy in Australia, Dordrecht : Springer

Frege on existential propositions
1991
Grazer Philosophische Studien 41

1991
in: Essais sur le sens et la réalité, Paris-Montréal : Bellarmin
Problems with the Fregean interpretation of Husserl
1991
Journal of the British Society for Phenomenology 22/1
A Fregean solution to the paradox of analysis
1990
Grazer Philosophische Studien 37

1990
Ratio 3
Frege and Wittgenstein, truth and negation
1990
in: Wittgenstein — eine neubewertung/Wittgenstein — towards a re-evaluation, Dordrecht : Springer

Logical & philosophical foundations for arithmetical logic
1990
in: Physicalism in mathematics, Dordrecht : Springer

1990
Synthese 85/2
Seinsverständnis, Aussage und Zeitlichkeit
1990
in: Bewußtsein und Zeitlichkeit, Würzburg : Königshausen & Neumann
The archeology of the tractatus
1990
in: Wittgenstein — eine neubewertung/Wittgenstein — towards a re-evaluation, Dordrecht : Springer

On discovering the difference between Husserl and Frege
1989
in: American phenomenology, Dordrecht : Kluwer

Principles of categorial grammar in the light of current formalisms
1989
in: The Vienna circle and the Lvov-Warsaw school, Dordrecht : Springer

Verbindende Namen - verbundene Gegenstände
1989
in: Phänomenologie im Widerstreit, Frankfurt am Main : Suhrkamp
Analysis as the method of logical discovery
1988
Synthese 77/1

Frege and his German contemporaries on alethic modalities
1988
in: Modern modalities, Dordrecht : Springer

Frege and Kant on a priori knowledge
1988
Synthese 77/3

1988
in: Zur Problematik der transzendentalen Phänomenologie Edmund Husserls, Prag : Institut für Philosophie und Soziologie
Categorial grammar and lambda calculus
1987
in: Mathematical logic and its applications, Dordrecht : Springer

1987
The Journal of Philosophy 84
1987
Journal of Philosophy 84
1987
Journal of Philosophy 84
Continuity and change in Frege's philosophy of mathematics
1986
in: Frege synthesized, Dordrecht : Springer

Frege and the case of the missing sense
1986
Grazer Philosophische Studien 27

Frege's proof of referentiality
1986
in: Frege synthesized, Dordrecht : Springer

Frege, Dedekind, and the philosophy of mathematics
1986
in: Frege synthesized, Dordrecht : Springer

Sematische Vollständigkeit, Wertverlaufsnamen und Freges Kontextprinzip
1985
Grazer Philosophische Studien 23

Gottlob Frege (The Arguments of the Philosophers)
1984
Philosophische Rundschau 31/1-2

Husserl, Frege and the overcoming of psychologism
1984
in: Philosophy and science in phenomenological perspective, Dordrecht : Springer

Sujet, prédicat, objet, concept chez Frege
1984
Histoire Épistémologie Langage 6/1

The metaphysics of Gottlob Frege
1984
Grazer Philosophische Studien 21

Die Bedeutung von "Bedeutung" bei Frege
1983
Conceptus 17/40-41
Ellipse et sens littéral chez Searle
1983
Histoire Épistémologie Langage 5/1

La "logique intensionnelle"est-elle vraiment intensionnelle?
1983
Histoire Épistémologie Langage 5/2

La logique intensionnelle et l'héritage de Frege en sémantique
1983
Histoire Épistémologie Langage 5/2

Sur la sémantique frégéenne des énoncés
1983
Histoire Épistémologie Langage 5/2

The meaning of "Bedeutung" in Frege
1983
in: History of semiotics, Amsterdam : Benjamins
Beziehungen zwischen der Semantik Freges und der Noematik Husserls
1982
Archiv für Geschichte der Philosophie 64
Frege's "objects" and "concepts"
1982
Philosophy and Phenomenological Research 42/3

1981
in: Philosophie du langage, logique philosophique / Philosophy of language, philosophical logic, Dordrecht : Springer

On the translation of Frege's Bedeutung
1980
Analysis 40
Proposition as the connotation of sentence
1979
in: Semiotics in Poland 1984–1969, Dordrecht : Springer

Die Zweideutigkeit von Freges "Sinn" und "Bedeutung"
1978
Allgemeine Zeitschrift für Philosophie 3
1978
Journal of the British Society for Phenomenology 9
Matthias Schirn (hrsg.): Studien zu Frege / studies on Frege
1978
Grazer Philosophische Studien 6

Michael Dummett, Frege Philosophy of Language
1978
Revue philosophique de Louvain 76/32

1977
Nuova corrente 72-73
Freges Analyse der Hilbertschen Axiomatik
1977
Grazer Philosophische Studien 3

Die Bedeutung des Ausdrucks "Bedeutung" bei Frege
1976
in: Studien zu Frege III, Stuttgart-Bad Cannstatt : frommann-holzboog
On the concept of logical form in Frege
1976
in: History of linguistic thought and contemporary linguistics, Berlin : de Gruyter
Gottlob Frege, Conceptual Notation and Related Articles
1974
Revue philosophique de Louvain 72/15

1974
Research in Phenomenology 4
1974
Journal of the history of philosophy 12
On Kant, Frege, analyticity and the theory of reference
1974
in: Kant's theory of knowledge, Dordrecht : Springer

On Kant, Frege, analyticity and the theory of reference
1972
in: Proceedings of the Third international Kant congress, Dordrecht : Springer

The meaning of "Bedeutung" in Frege
1970
Analysis 30
1967
Archiv für Geschichte der Philosophie 49
Fondazione e oggettività logica in G. Frege
1966
aut aut 94
Anmerkungen zu G. Freges "Begriffschrift"
1964
in: Begriffsschrift und andere Aufsätze, Darmstadt : Wissenschaftliche Buchgesellschaft

The logical analysis of existence
1962
in: Logico-philosophical studies, Dordrecht : Springer

Einige Bemerkungen zur Überwindung des Psychologismus durch Gottlob Frege und Edmund Husserl
1961
in: Atti del XII congresso internazionale di filosofia 12, Firenze : Sansoni