Much of the mathematics of relations now taken for granted was "borrowed" from Peirce, not always with all due credit; on that and on how the young Bertrand Russell, especially his Principles of Mathematics and Principia Mathematica, did not do Peirce justice, see Anellis (1995).
Suur osa seoste matemaatikast, mida tänapäeval peetakse enesestmõistetavaks, on "laenatud" Peirce'ilt, kusjuures tema panust ei ole alati tunnustatud; selle kohta ja selle kohta, kuidas noor Bertrand Russell, eriti raamatutes "Principles of Mathematics" ja "Principia Mathematica", jättis Peirce'i tunnustamata, vt Anellis 1995.