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| Mirrors > Home > ILE Home > Th. List > 9p1e10 | Unicode version | ||
| Description: 9 + 1 = 10. (Contributed by Mario Carneiro, 18-Apr-2015.) (Revised by Stanislas Polu, 7-Apr-2020.) (Revised by AV, 1-Aug-2021.) |
| Ref | Expression |
|---|---|
| 9p1e10 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-dec 9789 |
. 2
| |
| 2 | 9nn 9484 |
. . . . . 6
| |
| 3 | 1nn 9324 |
. . . . . 6
| |
| 4 | nnaddcl 9333 |
. . . . . 6
| |
| 5 | 2, 3, 4 | mp2an 430 |
. . . . 5
|
| 6 | 5 | nncni 9323 |
. . . 4
|
| 7 | 6 | mulridi 8334 |
. . 3
|
| 8 | 7 | oveq1i 6098 |
. 2
|
| 9 | 6 | addridi 8475 |
. 2
|
| 10 | 1, 8, 9 | 3eqtrri 2264 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-sep 4251 ax-cnex 8276 ax-resscn 8277 ax-1cn 8278 ax-1re 8279 ax-icn 8280 ax-addcl 8281 ax-addrcl 8282 ax-mulcl 8283 ax-mulcom 8286 ax-addass 8287 ax-mulass 8288 ax-distr 8289 ax-1rid 8292 ax-0id 8293 ax-cnre 8296 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-br 4132 df-iota 5340 df-fv 5388 df-ov 6091 df-inn 9314 df-2 9372 df-3 9373 df-4 9374 df-5 9375 df-6 9376 df-7 9377 df-8 9378 df-9 9379 df-dec 9789 |
| This theorem is used by: dfdec10 9791 10nn 9807 le9lt10 9819 decsucc 9833 5p5e10 9863 6p4e10 9864 7p3e10 9867 8p2e10 9872 9p2e11 9879 10m1e9 9888 9lt10 9923 sq10e99m1 11173 3dvds 12656 3dvdsdec 12657 3dvds2dec 12658 1259lem2 13272 1259lem3 13273 1259lem4 13274 bposlem4 16314 bposlem5 16315 |
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