Theorem readdcli 7480

Description: Closure law for addition of reals. (Contributed by NM, 17-Jan-1997.)

Hypotheses

Ref	Expression
recni.1	|- A e. RR
axri.2	|- B e. RR

Assertion

Ref	Expression
readdcli	|- ( A + B ) e. RR

Proof of Theorem readdcli

Step	Hyp	Ref	Expression
1		recni.1	. 2 |- A e. RR
2		axri.2	. 2 |- B e. RR
3		readdcl 7447	. 2 |- ( ( A e. RR /\ B e. RR ) -> ( A + B ) e. RR )
4	1, 2, 3	mp2an 417	1 |- ( A + B ) e. RR

Syntax hints:   e. wcel 1438  (class class class)co 5634   RRcr 7328   + caddc 7332

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia3 106  ax-addrcl 7421

This theorem is referenced by:  resubcli  7724  eqneg  8173  2re  8463  3re  8467  4re  8470  5re  8472  6re  8474  7re  8476  8re  8478  9re  8480  numltc  8871  ex-fl  11309