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| Description: A monoid is a magma. (Contributed by FL, 2-Nov-2009.) |
| Ref | Expression |
|---|---|
| mndismgm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mndissmgrp 10386 |
. 2
| |
| 2 | smgrpismgm 10379 |
. 2
| |
| 3 | 1, 2 | syl 12 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: mndmgmid 10389 ismnd2 10392 ring1cl 10415 expus 14726 ltlga 14729 isdivrng2 16111 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-clab 1872 df-cleq 1877 df-clel 1880 df-v 2294 df-in 2603 df-sgr 10378 df-mnd 10385 |