# porisms

Noun

- plural form of
*porism*

- On the other hand the
**Porisms**, to which Diophantus makes three references ("we have it in the**Porisms**that. - The "
**Porisms**" quoted are interesting propositions in the theory of numbers, one of which was clearly that the dif f erence between two cubes can be resolved into of two cubes. - The book is valuable also for the propositions in the theory of numbers, other than the "
**porisms**," stated or assumed in it. - Each of these was divided into two books, and, with the Data, the
**Porisms**and Surface-Loci of Euclid and the Conics of Apollonius were, according to Pappus, included in the body of the ancient analysis. - With the mention of the
**Porisms**of Euclid we have an account of the relation of porism to theorem and problem.

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