Manuscript  Posted 12/01/2015
Peirce, Charles S. (18991900 [c.]). Notes on Topical Geometry. MS [R] 142
A. MS., Gundated16 [c.18991900?], 6 pp., plus 2 pp. each of two other drafts having the same title as above.
Published, in part, as 8.368n23. Omitted from publication are definitions of “...
Thing, Act, Law, Hope, Law of Excluded Middle, Mathematics, Identity of Indiscernibles, Collection, Isaac Newton, Character, Ens Rationis, Sign, Icon, Index, Symbol, Designation, Reagent, Term, Proposition, Argument, Correspondence, Individual, Indeterminacy


Dictionary Entry  Posted 08/01/2015
Quote from "Lowell Lectures. 1903. Lecture 5. Vol. 1"
An ens rationis may be defined as a subject whose being consists in a Secondness, or fact, concerning something else. Its being is thus of the nature of Thirdness...


Manuscript  Posted 08/01/2015
Peirce, Charles S. (1903). Lowell Lectures. 1903. Lecture 5. Vol. 1. MS [R] 469
Robin Catalogue:
A. MS., notebook, n.p., 1903, pp. 274.
Doctrine of multitudes. Breadth and depth. Reference to Bertrand Russell’s Principles of Mathematics in connection with...
Cardinal Number, Ordinal Number, Doctrine of Multitude, Collection, Multitude, Ens Rationis, Existence, Proper Name, Sam, Gath, Being, Essence, Breadth, Imputed Firstness, Pure Secondness, Regulative Principle, Quality, Bertrand Russell, Scientific Vocabulary, Relation, Georg Cantor, Achilles and the Tortoise, Cantorian Succession, Bernard Bolzano, Definition, Enumerable Collection, Denumeral Collection, Syllogism of Transposed Quantity, Depth


Dictionary Entry  Posted 25/11/2014
Quote from "C.S.P.'s Lowell Lectures of 1903 2nd Draught of 3rd Lecture"
An ens rationis is something whose being consists in the possibility of something being true about something else.


Manuscript  Posted 25/11/2014
Peirce, Charles S. (1903). C.S.P.'s Lowell Lectures of 1903 2nd Draught of 3rd Lecture. MS [R] 462
Robin Catalogue:
A. MS., n.p., October 5, 1903, pp. 288 (pagination by even numbers only), incomplete.
Alpha part of existential graphs: permissible operations. The Beta part....
Beta Graph, Alphaimpossibility, Betaimpossibility, Principle of Contradiction, Principle of Excluded Middle, Relation, Reference, Gamma Graph, Ens Rationis, Softness, Hardness, Adjectival Meaning, Constitutive Principle, Regulative Principle, Pragmatism, Dormitive Virtue, Quality, Possibility, Law of Nature, Existence, Dyadic Relation, Triadic Relation, Brute Relation, Rerelation, Conception, Giving, Law, Sign, Firstness, Secondness, Thirdness, Icon, Index, Symbol


Manuscript  Posted 28/09/2014
Peirce, Charles S. (1903). Lowell Lectures. 1903. Lecture 3. MS [R] 459
Robin Catalogue:
A. MS., notebook, n.p., 1903, pp. 141.
The words “Won’t do” (by CSP) appear on the cover of the notebook. Definition of “mathematics.” Denial that mathematics...
Mathematics, Benjamin Peirce, Science, Natural Classification of Sciences, Mathematical Hypothesis, Applied Mathematics, Pure Mathematics, Boëthius, Philosophy, Quantity, Richard Dedekind, Logic, Mathematical Reasoning, Necessary Reasoning, Existential Graph, Simplest Mathematics, Number, Georg Cantor, Cardinal Number, Ordinal Number, Multitude, Maniness, Posteriority, Ernst Schröder, Bertrand Russell, Alfred North Whitehead, Inclusion of Correlates, Substantive Possibility, Quality, Epistemology, Metaphysics, Psychology, Identity, Relation, Existence, Phenomenology, Phenomenon, Ens Rationis, Essence, Nothing, Nonsense


Manuscript  Posted 25/09/2014
Peirce, Charles S. (1903). Lowell Lectures. 1903. Lecture 3. 1st draught. MS [R] 458
Robin Catalogue:
Science, mathematics, and quantity. Pure mathematics (the science of hypotheses) is divided in accordance with the complexity of its hypotheses. Simplest mathematics...
Mathematics, Science, Philosophy, Benjamin Peirce, Richard Dedekind, Simplest Mathematics, Mathematics of Existential Graphs, False Graph, True Graph, Mathematics of Logic, Threevalued Mathematics, Theory of Numbers, Higher Arithmetic, Multitude, Maniness, Georg Cantor, Bernard Bolzano, Euclid, Infinity, Whole, Collection, Definition, Dyad, Duette, Ordered Pair, Ens Rationis, Nothing, Possible, Identity, Augustus De Morgan, Syllogism of Transposed Quantity, Existence, Experience, Knowledge, Possibility, Idea, Achilles and the Tortoise, Convenient Fiction


Manuscript  Posted 19/09/2014
Peirce, Charles S. (190102 [c.]). An Illustration of Dynamics. MS [R] 49
Robin Catalogue:
A. MS., n.p., [c.190102?], pp. 120, with 3 pp. of variants.
Setting out from two problems of dynamics both of which require for their solution the method of...
Infinitesimal, Reality, Existence, Unreal, Proper Name, Common Name, Fancy, Percept, Multitude, Collection, Definiteness, Latitude of Choice, Individuality, Counting, Perceptual Observation, Ens Rationis, Set, Couple, Dyadic Relation, General, Nonexistence, Selfcorrespondence, Correlative Inclusion, Multiplicity


Manuscript  Posted 17/09/2014
Peirce, Charles S. (1906 [c.]). Numeration. MS [R] 48
Robin Catalogue:
A. MS., n.p., n.d., pp. 120, with 44 pp., some of which belong to different drafts but many of which are rejected pages.
Definitions of “number” and “series.”...
Numeration, Arithmetical Notation, Number, Series, Collection, Multitude, Vagueness, Indefiniteness, Precision, Certainty, Ens Rationis, Real, Information, Experience, Enumerable Series, Simple Denumeral Series, Achilles and the Tortoise, Zeno, Cardinal Numerals, Indeterminacy, Whole, Partian Being, Totan Being, Abstraction

