-lemma sfr_ldrop_trans_ge: â\88\80L1,L2,d,e. â\87©[d, e] L1 â\89¡ L2 â\86\92 â\88\80dd,ee. â\89¼ [dd, ee] L1 →
- d + e â\89¤ dd â\86\92 â\89¼ [dd - e, ee] L2.
+lemma sfr_ldrop_trans_ge: â\88\80L1,L2,d,e. â\87©[d, e] L1 â\89¡ L2 â\86\92 â\88\80dd,ee. â\89½ [dd, ee] L1 →
+ d + e â\89¤ dd â\86\92 â\89½ [dd - e, ee] L2.