Theorem readdcli 8340

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 8306	. 2 |- ( ( A e. RR /\ B e. RR ) -> ( A + B ) e. RR )
4	1, 2, 3	mp2an 430	1 |- ( A + B ) e. RR

This proof depends on syntax axioms:   e. wcel 2209  (class class class)co 6085   RRcr 8179   + caddc 8183

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia3 108  ax-addrcl 8277

This theorem is used by:  resubcli  8591  eqneg  9065  2re  9377  3re  9381  4re  9384  5re  9386  6re  9388  7re  9390  8re  9392  9re  9394  numltc  9812  ef01bndlem  12542  ballotfilem2  13280  log2ublog2  16185  bposlem8  16279  ex-fl  16905