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Definition df-e 13889
Description: Define Euler's constant 2.71828.... (Contributed by NM, 14-Mar-2005.)
Assertion
Ref Expression
df-e  |-  _e  =  ( exp `  1 )

Detailed syntax breakdown of Definition df-e
StepHypRef Expression
1 ceu 13883 . 2  class  _e
2 c1 9482 . . 3  class  1
3 ce 13882 . . 3  class  exp
42, 3cfv 5570 . 2  class  ( exp `  1 )
51, 4wceq 1398 1  wff  _e  =  ( exp `  1 )
Colors of variables: wff setvar class
This definition is referenced by:  esum  13901  ere  13909  ege2le3  13910  efzval  13922  loge  23143  logdivlti  23176  emgt0  23537  pntpbnd1a  23971  ex-co  25364  subfaclim  28899
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