Theorem readdcli 7933

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 7900	. 2 |- ( ( A e. RR /\ B e. RR ) -> ( A + B ) e. RR )
4	1, 2, 3	mp2an 424	1 |- ( A + B ) e. RR

Syntax hints:   e. wcel 2141  (class class class)co 5853   RRcr 7773   + caddc 7777

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia3 107  ax-addrcl 7871

This theorem is referenced by:  resubcli  8182  eqneg  8649  2re  8948  3re  8952  4re  8955  5re  8957  6re  8959  7re  8961  8re  8963  9re  8965  numltc  9368  ef01bndlem  11719  ex-fl  13760