Two to Go him - only to learn that it was only the "first" stage. Dawn and Clem decide to go to the dark magician Rack's lair, expecting Willow to try to deal with him to recharge her powers. Buffy, Xander and Anya regroup at the Magic Box and debate their course of action. Buffy believes she can convince Willow to relent, but the others disagree; Buffy heads for Rack's, alone. Xander admits to Anya that he might have been able to stop Warren before he fired on Buffy and Tara, but was afraid to intervene, unarmed. Willow meets with Rack, who attempts
Word (group theory) product of two words is obtained by concatenation: Even if the two words are reduced, the product may not be. The inverse of a word is obtained by inverting each generator, and switching the order of the elements: The product of a word with its inverse can be reduced to the empty word: You can move a generator from the beginning to the end of a word by conjugation: Given a presentation formula_19 for a group "G", the word problem is the algorithmic problem of deciding, given as input two words in "S", whether they represent the same element of