Definition df-e 16100

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

Step	Hyp	Ref	Expression
1		ceu 16094	. 2 class e
2		c1 11153	. . 3 class 1
3		ce 16093	. . 3 class exp
4	2, 3	cfv 6562	. 2 class (exp‘1)
5	1, 4	wceq 1536	1 wff e = (exp‘1)

This definition is referenced by:  esum  16112  ere  16121  ege2le3  16122  efzval  16134  loge  26642  logdivlti  26676  pntpbnd1a  27643  ex-co  30466  subfaclim  35172