-lemma cprs_inv_cast1 (h) (G) (L): â\88\80W1,T1,X2. â¦\83G,Lâ¦\84 ⊢ ⓝW1.T1 ➡*[h] X2 →
- â\88¨â\88¨ â\88\83â\88\83W2,T2. â¦\83G,Lâ¦\84 â\8a¢ W1 â\9e¡*[h] W2 & â¦\83G,Lâ¦\84 ⊢ T1 ➡*[h] T2 & X2 = ⓝW2.T2
- | â¦\83G,Lâ¦\84 ⊢ T1 ➡*[h] X2.
+lemma cprs_inv_cast1 (h) (G) (L): â\88\80W1,T1,X2. â\9dªG,Lâ\9d« ⊢ ⓝW1.T1 ➡*[h] X2 →
+ â\88¨â\88¨ â\88\83â\88\83W2,T2. â\9dªG,Lâ\9d« â\8a¢ W1 â\9e¡*[h] W2 & â\9dªG,Lâ\9d« ⊢ T1 ➡*[h] T2 & X2 = ⓝW2.T2
+ | â\9dªG,Lâ\9d« ⊢ T1 ➡*[h] X2.