The Commens Dictionary
Quote from ‘A Syllabus of Certain Topics of Logic’
It is agreed that a certain sheet, or blackboard, shall, under the name of The Sheet of Assertion, be considered as representing the universe of discourse, and as asserting whatever is taken for granted between the graphist and the interpreter to be true of that universe. The sheet of assertion is, therefore, a graph.
Peirce, 1903, p. 15; CP 4.397
‘Sheet of Assertion’ (pub. 13.01.15-13:11). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from http://www.commens.org/dictionary/entry/quote-syllabus-certain-topics-logic-10.