Ens Rationis

Keyword: Ens Rationis


Manuscript | Posted 12/01/2015
Peirce, Charles S. (1899-1900 [c.]). Notes on Topical Geometry. MS [R] 142

A. MS., G-undated-16 [c.1899-1900?], 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 “...

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. 2-74.
Doctrine of multitudes. Breadth and depth. Reference to Bertrand Russell’s Principles of Mathematics in connection with...

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. 2-88 (pagination by even numbers only), incomplete.
Alpha part of existential graphs: permissible operations. The Beta part....

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. 1-41.
The words “Won’t do” (by CSP) appear on the cover of the notebook. Definition of “mathematics.” Denial that mathematics...

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...

Manuscript | Posted 19/09/2014
Peirce, Charles S. (1901-02 [c.]). An Illustration of Dynamics. MS [R] 49

Robin Catalogue:
A. MS., n.p., [c.1901-02?], pp. 1-20, with 3 pp. of variants.
Setting out from two problems of dynamics both of which require for their solution the method of...

Manuscript | Posted 17/09/2014
Peirce, Charles S. (1906 [c.]). Numeration. MS [R] 48

Robin Catalogue:
A. MS., n.p., n.d., pp. 1-20, with 44 pp., some of which belong to different drafts but many of which are rejected pages.
Definitions of “number” and “series.”...