eq n__0 n__0 true eq n__s X n__s Y eq activate X activate Y eq X Y false inf X cons X n__inf s X take 0 X nil take s X cons Y L cons activate Y n__take activate X activate L length nil 0 length cons X L s n__length activate L 0 n__0 s X n__s X inf X n__inf X take X1 X2 n__take X1 X2 length X n__length X activate n__0 0 activate n__s X s X activate n__inf X inf X activate n__take X1 X2 take X1 X2 activate n__length X length X activate X X eq 2 n__0 0 true 0 n__s 1 activate 1 false 0 inf 1 cons 2 n__inf 1 s 1 take 2 0 0 nil 0 n__take 2 length 1 n__length 1 FULL ./TRS/TRCSR/Ex1_GL02a_Z.trs