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Mirrors > Home > MPE Home > Th. List > darapti | Structured version Visualization version Unicode version |
Description: "Darapti", one of the syllogisms of Aristotelian logic. All is , all is , and some exist, therefore some is . (In Aristotelian notation, AAI-3: MaP and MaS therefore SiP.) For example, "All squares are rectangles" and "All squares are rhombuses", therefore "Some rhombuses are rectangles". (Contributed by David A. Wheeler, 28-Aug-2016.) |
Ref | Expression |
---|---|
darapti.maj | |
darapti.min | |
darapti.e |
Ref | Expression |
---|---|
darapti |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | darapti.e | . 2 | |
2 | darapti.min | . . . 4 | |
3 | 2 | spi 2054 | . . 3 |
4 | darapti.maj | . . . 4 | |
5 | 4 | spi 2054 | . . 3 |
6 | 3, 5 | jca 554 | . 2 |
7 | 1, 6 | eximii 1764 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 wal 1481 wex 1704 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-12 2047 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 |
This theorem is referenced by: (None) |
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