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Definition df-e 15422
Description: Define Euler's constant e = 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 15416 . 2 class e
2 c1 10536 . . 3 class 1
3 ce 15415 . . 3 class exp
42, 3cfv 6343 . 2 class (exp‘1)
51, 4wceq 1538 1 wff e = (exp‘1)
Colors of variables: wff setvar class
This definition is referenced by:  esum  15434  ere  15442  ege2le3  15443  efzval  15455  loge  25181  logdivlti  25214  pntpbnd1a  26172  ex-co  28226  subfaclim  32492
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