Femke
LightNews LightNews
banner
femfemfem.bsky.social
Femke
@femfemfem.bsky.social
84 followers 160 following 39 posts
Artist | Philosopher of Physics | Feminist | Lefty | A bit lost & looking for a job. Living in lovely Utrecht rn.
Find some of my art here https://www.saltedartist.com/femke-kuiling
Posts Replies Media Videos
Reposted by Femke
thomyorke.wastehq.social
May 30, 2025 at 2:01 PM
femfemfem.bsky.social
Same.
December 6, 2024 at 1:02 AM
Reposted by Femke
alisabokulich.bsky.social
Screenshot of Christine Ladd-Franklin's innovative logic paper published from her dissertation under C.S. Peirce as her thesis advisor in 1883 in volume Studies in Logic. As a woman JHU refused to grant Ladd-Franklin her earned PhD.
CONTENTS. O THE LOGIC OF THE EPICUREANS . By Allan Marquand. • .. O A MACHINE FOE PRODUCING SYLLOGISTIC VARIaTIONs By Allan Marquand. NOTE ON AN EIGHT-TERM LOGICAL MACHINE . • • ON THE ALGEBRA OF LOGIO • By Christine Ladd. • ON A NEW ALGEBRA OF LOGIC By O. H. Mitchell. • OPERATIONS IN RELATIVE NUMBER WITH APPLICATIONS TO THE THEORY OF PROBABILITIES By B. I. Gilman. O A THEORY OF PROBABLE INFERENCE NOTE A. NoTE B. • • • • • • By C. S. Peirce. PREFACE. THesE papers, the work of my students, have been so instructive to me, that I have asked and obtained permission to publish them in one volume. Two of them, the contributions of Miss Ladd (now Mrs. Fabian Franklin) and of Mr. Mitchell, present new developments of the logical algebra of Boole. Miss Ladd's article may serve, for those who are unacquainted with Boole's " Laws of Thought," as an introduction to the most wonderful and fecund discovery of modern logic. • The followers of Boole have altered their master's notation mainly in three respects. 1. A series of writers, — Jevons, in 1864; Peirce, in 1867; Grassman, in 1872; Schröder, in 1877; and McColl in 1877, - successively and independently declared in favor of using the sign of addition to unite different terms into one aggre-gate, whether they be mutually exclusive or not. Thus, we now write European + Republican, to stand for all Europeans and Republicans taken STUDIES IN LOGIC. BY MEMBERS OF THE JOHNS HOPKINS UNIVERSITY. ・、 = BOSTON: LITTLE, BROWN, AND COMPANY. 1883. ON THE ALGEBRA OF LOGIC. BE, CRISTINE LADD, SCA へ THErE are in existence five algebras of logic, - those of Boole, Jerons, Schröder, McColl, and Peirce, - of which the later ones are all modifications, more or less slight, of that of Boole. I propose to add one more to the number. It will bear more resemblance to that of Schröder than to any of the others; but it will differ from that in making use of a copula, and also in the form of expressing the conclusion.' ON IDENTICAL PROPOSITIONS. The propositions which logic considers are of two kinds, - those which affirm the identity of subject and predicate, and those which do not. Algebras of logic may be classified according to the way in which they express propositions that are not identities. Identical propositions have the same expression in all. Of the logical theorems which are identities, I shall give those which are essential to the subject, and for the most part without proof. (1) The sign = is the sign of equality. a =6, a equals b, means that in any logical expression a can 1 The substance of this paper was read at a meeting of the Metaphysical Club of the Johns Hopkins University, held in January, 1881.
December 1, 2024 at 11:27 PM