Directory UMM :Journals:Journal_of_mathematics:TAC:
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(Our previous work has only dealt with the theory of opetopes.) We then use results of [12] to prove that the category of opetopic sets is indeed equivalent to the category
A ring is an abelian object in the category of rings if and only if it has zero multiplication; the same is true for non-associative rings, for commutative rings, for Lie algebras,
We saw in the prologue that the comonad Path on Cat has as its coalgebras free categories on graphs (the category of coalgebras is equivalent to the category of graphs), and that
We establish several basic properties of the Pfaffian transform, and we use the transfer matrix method to show that the set of sequences with rational generating functions is
We introduce the notion of (pre)crossed module in a semiabelian category, and establish equivalences between internal reflexive graphs and precrossed modules, and between
From these results we conclude that for prob- lems with a single due date for all jobs and machin- es which are continuously available we always can "nd o!-line and
T his paper applies Kirzner’s concept of entrepreneurship to ex plain the economic success of Hong Kong. T he city economy possesses neither natural resources, nor
Since we wish to explore the consequences of dispensing with that assumption, the question that interests us is: Given a contingent commodity allocation, is it possible to design
