Begriffsschrift, a formula language, modeled upon that of arithmetic, for pure thought

Title page
Preface
I. DEFINITION OF THE SYMBOLS
	1. Letters and other signs
	Judgment
	2. Possibility that a content become a judgment. Content stroke, judgment stroke
	3. Subject and predicate. Conceptual content
	4. Universal, particular; negative; categoric, hypothetic, disjunctive; apodictic, assertory, problematic judgments
	Conditionality
	5. If. Condition stroke
	6, Inference. The Aristotelian modes of inference
	Negation
	7. Negation stroke. Or, either-or, and, but, and not, neither-nor
	Identity of content
	8. Need for a sign for identity of content, introduction of such a sign
	Functions
	9. Definition of the words \"function\" and\" argument\". Functions of several arguments. Argument places. Subject, object
	10. Use of letters as function signs. \"A has the property Φ.\" \"B has the relation Ψ to A.\" \"B is a result of an application of the procedure Ψ to the object A.\" The function sign as argument
	Generality
	11. German letters. The concavity in the content stroke. Replaceability of German letters. Their scope. Latin letters
	12. There are some objects that do not --. There is no -. There are some -. Every. All. Causal connections. None. Some do not. Some. It is possible that -. Square of logical opposition
II. REPRESENTATION AND DERIVATION OF SOME JUDGMENTS OF PURE THOUGHT
	13. Usefulness of the deductive mode of presentation
	14. The first two fundamental laws of conditionality
	15. Some of their consequences
	16. The third fundamental law of conditionality, consequences
	17. The first fundamental law of negation, consequences
	18. The second fundamental law of negation, consequences
	19. The third fundamental law of negation, consequences
	20. The first fundamental law of identity of content, consequence
	21. The second fundamental law of identity of content, consequences
	22. The fundamental law of generality, consequences
III. SOME TOPICS FROM A GENERAL THEORY OF SEQUENCES
	23. Introductory remarks
	24. Heredity. Doubling of the judgment stroke. Lower-case Greek letters
	25. Consequences
	26. Succession in a sequence
	27. Consequences
	28. Further consequences
	29. \"z belongs to the f-sequence beginning with x.\" Definition and consequences
	30. Further consequences
	31. Single-valuedness of a procedure. Definition and consequences