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Metamath Proof Explorer

Theorem halfre

Description: One-half is real. (Contributed by David A. Wheeler, 8-Dec-2018)

Ref Expression
Assertion halfre 
|- ( 1 / 2 ) e. RR

Proof

Step Hyp Ref Expression
1 2re 
 |-  2 e. RR
2 2ne0 
 |-  2 =/= 0
3 1 2 rereccli 
 |-  ( 1 / 2 ) e. RR