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| Mirrors > Home > ILE Home > Th. List > 1p1e2 | Unicode version | ||
| Description: 1 + 1 = 2. (Contributed by NM, 1-Apr-2008.) |
| Ref | Expression |
|---|---|
| 1p1e2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 9363 |
. 2
| |
| 2 | 1 | eqcomi 2242 |
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-5 1500 ax-gen 1502 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 df-2 9363 |
| This theorem is used by: 2m1e1 9422 add1p1 9555 sub1m1 9556 nn0n0n1ge2 9715 3halfnz 9743 10p10e20 9871 5t4e20 9878 6t4e24 9882 7t3e21 9886 8t3e24 9892 9t3e27 9899 fz0to3un2pr 10530 fldiv4p1lem1div2 10740 m1modge3gt1 10808 fac2 11169 hash2 11253 s2leng 11561 nn0o1gt2 12672 3lcm2e6woprm 12864 2exp8 13214 2exp11 13215 2exp16 13216 ballotfilem2 13228 ballotfilemfc0 13232 ballotfilemfcc 13233 logfac 15995 logbleb 16063 logblt 16064 log2ublem3 16085 log2ublog2 16086 1sgm2ppw 16109 1loopgrvd2fi 16546 2wlklem 16617 clwwlkext2edg 16663 konigsberglem1 16729 konigsberglem2 16730 konigsberglem3 16731 ex-exp 16741 |
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