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Mathbox for Alexander van der Vekens |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > gbowodd | Structured version Visualization version GIF version |
Description: A weak odd Goldbach number is odd. (Contributed by AV, 25-Jul-2020.) |
Ref | Expression |
---|---|
gbowodd | ⊢ (𝑍 ∈ GoldbachOddW → 𝑍 ∈ Odd ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | isgbow 47677 | . 2 ⊢ (𝑍 ∈ GoldbachOddW ↔ (𝑍 ∈ Odd ∧ ∃𝑝 ∈ ℙ ∃𝑞 ∈ ℙ ∃𝑟 ∈ ℙ 𝑍 = ((𝑝 + 𝑞) + 𝑟))) | |
2 | 1 | simplbi 497 | 1 ⊢ (𝑍 ∈ GoldbachOddW → 𝑍 ∈ Odd ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2106 ∃wrex 3068 (class class class)co 7431 + caddc 11156 ℙcprime 16705 Odd codd 47550 GoldbachOddW cgbow 47671 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-ext 2706 |
This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1540 df-ex 1777 df-sb 2063 df-clab 2713 df-cleq 2727 df-clel 2814 df-rex 3069 df-rab 3434 df-v 3480 df-gbow 47674 |
This theorem is referenced by: gboodd 47682 |
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