Definition df-e 14638

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

Step	Hyp	Ref	Expression
1		ceu 14632	. 2 class e
2		c1 9816	. . 3 class 1
3		ce 14631	. . 3 class exp
4	2, 3	cfv 5804	. 2 class (exp‘1)
5	1, 4	wceq 1475	1 wff e = (exp‘1)

This definition is referenced by:  esum  14650  ere  14658  ege2le3  14659  efzval  14671  loge  24137  logdivlti  24170  emgt0  24533  pntpbnd1a  25074  ex-co  26687  subfaclim  30424