diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/Core/Term/Thinned.idr | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/Core/Term/Thinned.idr b/src/Core/Term/Thinned.idr index 3ed4779..3a06612 100644 --- a/src/Core/Term/Thinned.idr +++ b/src/Core/Term/Thinned.idr @@ -47,3 +47,11 @@ wknCong {t = t `Over` thin1, u = u `Over` thin2} prf thin = Calc $ ~~ wkn (wkn t thin1) thin ...(sym $ wknHomo t thin1 thin) ~~ wkn (wkn u thin2) thin ...(cong (flip wkn thin) prf) ~~ wkn u (thin . thin2) ...(wknHomo u thin2 thin) + +export +wknHomo : + (t : Thinned k) -> + (thin1 : k `Thins` m) -> + (thin2 : m `Thins` n) -> + wkn (wkn t thin1) thin2 = wkn t (thin2 . thin1) +wknHomo (t `Over` thin) thin1 thin2 = cong (t `Over`) (compAssoc thin2 thin1 thin) |