question: {a,b,c}->{{a,b},{b,c}}??

*To*: mathgroup at smc.vnet.net*Subject*: [mg2459] question: {a,b,c}->{{a,b},{b,c}}??*From*: "Bart van der Zwet" <B.W.v.d.Zwet at stud.tue.nl>*Date*: Sun, 12 Nov 1995 22:26:12 -0500

Hello, I'm working on a problem in which I have to substitute a list, for instance {a,b,c,d} by the other list {{a,b},{b,c},{c,d}}. I've managed to solve it for a given length of the first list, by using the substitution-rule : {a_,b_,c_} -> {{a,b},{b,c}} (this for a list of three elements) I would like to find out how this can be done for a list of arbitrary length. Yours, Bart van der Zwet Student Mathematics Eindhoven University of Technology The Netherlands e-mail : B.W.v.d.Zwet at stud.tue.nl