Charles S. Peirce 
Mathematical Philosophy [PDF ebook] 

I-XXX — 1 Logic of History (691) — 2 [Parts of Carnegie Application] (L 75) — 3 Fermatian Inference and De Morgan’s Syllogism of Transposed Quantity — 4 Logico-Mathematical Glosses (812) — 5 Qualitative Logic: Preface; The Modus Ponens; The Logical Algebra of Boole (736) — 6 Meaning (Pragmatism) (622) — 7 Abstracts of Eight Lectures [Topological Basis of Philosophy of Continuity] (942) — 8 Lectures on Pragmatism, Lecture II (302, 303) — 9 Types of Reasoning (441) — 10 Reason’s Conscience; A Practical Treatise on the Theory of Discovery Wherein Logic Is Conceived as Semeiotic (parts of six notebooks in 693) — 11 An Appraisal of the Faculty of Reasoning (616, 617) — 12 [Necessary Reasoning] (760) — 13 Of the Place among the Sciences of Philosophy and of each Branch of it (from 328) — 14 ????? ???????? (517) — 15 On Quantity with Special Reference to Collectional and Mathematical Infinity (15) — 16 ?. Sketch of Dichotomic Mathematics (4) — B. On the Number of Dichotomous Divisions; a Problem in Permutations (74) — 17 The Categories (717) — 18 (PAP) (293) — 19 Detached Ideas Continued and the Dispute Between Nominalists and Realists (439) — 20 [The Problem of Map Coloring] (154) — 21 How to Reason: A Critick of Arguments (397) — 22 On Physical Geometry (257) — 23 Methods of Reasoning (748) — 24 Sketch of a New Philosophy (928) — 25 [Conceptions of Modern Mathematics] (from 950) — Key to Greek Terms — Index of ?ames — Subject Index