French mathematician, developed calculus of relations (1921 to 2013)
Jacques Riguet (1921 to October 20, 2013) was a French mathematician known for his contributions to algebraic logic and category theory. According to Gunther Schmidt and Thomas Ströhlein, "Alfred Tarski and Jacques Riguet founded the modern calculus of relations".[1]
^Schmidt, Gunther; Ströhlein, Thomas (6 December 2012). Relations and Graphs: Discrete Mathematics for Computer Scientists. Springer Science & Business Media. p. 277. ISBN 978-3-642-77968-8.
JacquesRiguet (1921 to October 20, 2013) was a French mathematician known for his contributions to algebraic logic and category theory. According to Gunther...
Lindenbaum–Tarski algebra. In the practice of the calculus of relations, JacquesRiguet used the algebraic logic to advance useful concepts: he extended the...
{\displaystyle F\subseteq A\times Z{\text{ and }}G\subseteq B\times Z.} JacquesRiguet named these relations difunctional since the composition F G T {\displaystyle...
involves flipping a Ferrers diagram about a diagonal line. In 1951 JacquesRiguet adopted this manner of ordering to the rows of a logical matrix. Alignment...
of the American Mathematical Society 3: 382–8, Jstor link MR0050559 JacquesRiguet (1954) "Sur l'extension du calcul des relations binaires au calcul des...
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