-lemma lsubr_fwd_drops2_bind: âL1,L2. L1 ⍠L2 â
- âb,f,I,K2. đâŚf⌠â âŹ*[b, f] L2 â K2.â{I} â
- â¨â¨ ââK1. K1 ⍠K2 & âŹ*[b, f] L1 â K1.â{I}
- | ââK1,W,V. K1 ⍠K2 & âŹ*[b, f] L1 â K1.ââW.V & I = BPair Abst W
- | ââJ1,J2,K1,V. K1 ⍠K2 & âŹ*[b, f] L1 â K1.â{J1}V & I = BUnit J2.
+lemma lsubr_fwd_drops2_bind:
+ âL1,L2. L1 ⍠L2 â
+ âb,f,I,K2. đâŞf⍠â âŠ*[b,f] L2 â K2.â[I] â
+ â¨â¨ ââK1. K1 ⍠K2 & âŠ*[b,f] L1 â K1.â[I]
+ | ââK1,W,V. K1 ⍠K2 & âŠ*[b,f] L1 â K1.ââW.V & I = BPair Abst W
+ | ââJ1,J2,K1,V. K1 ⍠K2 & âŠ*[b,f] L1 â K1.â[J1]V & I = BUnit J2.