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Mirrors > Home > MPE Home > Th. List > Mathboxes > aisfbistiaxb | Structured version Visualization version GIF version |
Description: Given a is equivalent to F., Given b is equivalent to T., there exists a proof for a-xor-b. (Contributed by Jarvin Udandy, 31-Aug-2016.) |
Ref | Expression |
---|---|
aisfbistiaxb.1 | ⊢ (𝜑 ↔ ⊥) |
aisfbistiaxb.2 | ⊢ (𝜓 ↔ ⊤) |
Ref | Expression |
---|---|
aisfbistiaxb | ⊢ (𝜑 ⊻ 𝜓) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | aisfbistiaxb.1 | . . 3 ⊢ (𝜑 ↔ ⊥) | |
2 | 1 | aisfina 44344 | . 2 ⊢ ¬ 𝜑 |
3 | aisfbistiaxb.2 | . . 3 ⊢ (𝜓 ↔ ⊤) | |
4 | 3 | aistia 44343 | . 2 ⊢ 𝜓 |
5 | 2, 4 | abnotataxb 44362 | 1 ⊢ (𝜑 ⊻ 𝜓) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 ⊻ wxo 1505 ⊤wtru 1542 ⊥wfal 1553 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-xor 1506 df-tru 1544 df-fal 1554 |
This theorem is referenced by: (None) |
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