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Theorem 1p1e2 9260
Description: 1 + 1 = 2. (Contributed by NM, 1-Apr-2008.)
Assertion
Ref Expression
1p1e2 (1 + 1) = 2

Proof of Theorem 1p1e2
StepHypRef Expression
1 df-2 9202 . 2 2 = (1 + 1)
21eqcomi 2235 1 (1 + 1) = 2
Colors of variables: wff set class
Syntax hints:   = wceq 1397  (class class class)co 6018  1c1 8033   + caddc 8035  2c2 9194
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1495  ax-gen 1497  ax-ext 2213
This theorem depends on definitions:  df-bi 117  df-cleq 2224  df-2 9202
This theorem is referenced by:  2m1e1  9261  add1p1  9394  sub1m1  9395  nn0n0n1ge2  9550  3halfnz  9577  10p10e20  9705  5t4e20  9712  6t4e24  9716  7t3e21  9720  8t3e24  9726  9t3e27  9733  fz0to3un2pr  10358  fldiv4p1lem1div2  10566  m1modge3gt1  10634  fac2  10994  hash2  11077  s2leng  11374  nn0o1gt2  12484  3lcm2e6woprm  12676  2exp8  13026  2exp11  13027  2exp16  13028  logbleb  15704  logblt  15705  1sgm2ppw  15738  1loopgrvd2fi  16175  2wlklem  16246  clwwlkext2edg  16292  konigsberglem1  16358  konigsberglem2  16359  konigsberglem3  16360  ex-exp  16370
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