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Definition df-e 13359
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 13353 . 2  class  _e
2 c1 9288 . . 3  class  1
3 ce 13352 . . 3  class  exp
42, 3cfv 5423 . 2  class  ( exp `  1 )
51, 4wceq 1369 1  wff  _e  =  ( exp `  1 )
Colors of variables: wff setvar class
This definition is referenced by:  esum  13371  ere  13379  ege2le3  13380  efzval  13391  loge  22040  logdivlti  22074  emgt0  22405  pntpbnd1a  22839  ex-co  23650  subfaclim  27081
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