Generator

syllogism

A generator in the logic library, called 7 times across 1 essays. Below: what it draws at its defaults and at each mode an essay asks for, what it checks while drawing, and everywhere it is used.

syllogism is one function. Everything below came out of it during this build, at parameters taken from the essays rather than invented for this page — so a figure here is the same figure a reader meets in an essay, and if the generator changes, this page changes with it.

At its defaults

The four categorical formsTwo overlapping circles four times, shaded or dotted to show what each of the four sentence forms says.A: All S are PSPE: No S is PSPI: Some S is PSPO: Some S is not PSPshading means the region is empty; a dot means it has something in itthe universal forms say what is empty and the particular ones say what is not

show: "count"

The 256 syllogistic forms, and the 24 that workA grid with one cell per syllogistic form, marked according to whether it is valid and what it needs to be valid.AAAEAIAOEAEEEIEOIAIEIIIOOAOEOIOO1·A1·E1·I1·O2·A2·E2·I2·O3·A3·E3·I3·O4·A4·E4·I4·Ovalid: AAA-1 AII-1 EAE-1 EIO-1 AEE-2 AOO-2 EAE-2 EIO-2 AII-3 EIO-3 IAI-3 OAO-3 AEE-4 EIO-4 IAI-4valid only with existential import: AAI-1 EAO-1 AEO-2 EAO-2 AAI-3 EAO-3 AAI-4 AEO-4 EAO-4256 forms — 15 valid outright, 9 more if every term is assumed to have memberseach cell is one mood in one figure, and the verdict was reached by trying all 256 occupancies

show: "argument"

EIO-2: No P is M; Some S is MThree circles for the three terms, with the regions the premises empty shaded and the regions they populate dotted.SMPNo P is M. Some S is M. Therefore: Some S is not P.valid — no occupancy of the eight regions makes the premises true and the conclusionfalse

What it checks while it draws

Collected by running the family and recording what it asserted, not written here. The count is how many separate times the claim was put to the test while these drawings were made.

Where it is called

Changing this generator changes every figure on this list. That is what makes the list worth publishing rather than keeping in a check script.

The whole library · What the figures prove