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Mirrors > Home > MPE Home > Th. List > 9p1e10OLD | Structured version Visualization version Unicode version |
Description: 9 + 1 = 10. (Contributed by Mario Carneiro, 18-Apr-2015.) Obsolete version of 9p1e10 11496 as of 8-Sep-2021. (New usage is discouraged.) (Proof modification is discouraged.) |
Ref | Expression |
---|---|
9p1e10OLD |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-10OLD 11087 | . 2 | |
2 | 1 | eqcomi 2631 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wceq 1483 (class class class)co 6650 c1 9937 caddc 9939 c9 11077 c10 11078 |
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-9 1999 ax-ext 2602 |
This theorem depends on definitions: df-bi 197 df-an 386 df-ex 1705 df-cleq 2615 df-10OLD 11087 |
This theorem is referenced by: dfdecOLD 11495 declecOLD 11544 9p1e10bOLD 11556 |
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