This is an inofficial mirror of http://metamath.tirix.org for personal testing of a visualizer extension only.
Description: Adding _pi / 2 to itself gives _pi . See 2halves . (Contributed by David A. Wheeler, 8-Dec-2018)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | pidiv2halves |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | picn | ||
| 2 | 2halves | ||
| 3 | 1 2 | ax-mp |