Theorem readdcli 7970

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 7937	. 2 |- ( ( A e. RR /\ B e. RR ) -> ( A + B ) e. RR )
4	1, 2, 3	mp2an 426	1 |- ( A + B ) e. RR

Syntax hints:   e. wcel 2148  (class class class)co 5875   RRcr 7810   + caddc 7814

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia3 108  ax-addrcl 7908

This theorem is referenced by:  resubcli  8220  eqneg  8689  2re  8989  3re  8993  4re  8996  5re  8998  6re  9000  7re  9002  8re  9004  9re  9006  numltc  9409  ef01bndlem  11764  ex-fl  14480