Definition df-e 7491

Description: Define Euler's constant 2.71828....

Assertion

Ref	Expression
df-e	|- e = (exp` 1)

Detailed syntax breakdown of Definition df-e

Step	Hyp	Ref	Expression
1		ceu 7486	. 2 class e
2		c1 5380	. . 3 class 1
3		ce 7485	. . 3 class exp
4	2, 3	cfv 3260	. 2 class (exp` 1)
5	1, 4	wceq 989	1 wff e = (exp` 1)

This definition is referenced by:  eval 7501  ere 7522  efnn0val 7565  eirrlem5 7585  loge 9017

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