Definition df-e 7504

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 7499	. 2 class e
2		c1 5389	. . 3 class 1
3		ce 7498	. . 3 class exp
4	2, 3	cfv 3263	. 2 class (exp` 1)
5	1, 4	wceq 992	1 wff e = (exp` 1)

This definition is referenced by:  eval 7514  ere 7535  efnn0val 7578  eirrlem5 7598  loge 9039

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