Oriented two-dimensional circuits

A.K. Dewdney, Frank Harary
<span title="">1981</span> <i title="Elsevier BV"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/civgv5utqzhu7aj6voo6vc5vx4" style="color: black;">Discrete Mathematics</a> </i> &nbsp;
The natural generalization of a direted graph is an oriented cxxnp& a fuildamental concept in algebraic topology. Our..study of such qmiplms foIlq*s comt.%oato@&rath~r than top@@cal lines; when an n-circuit is defined for oriented ~~plex&s *as a. %ruc@re achieved .by a certain minimization process? we are abk to posq a qu+tion not k&by atis*@ by topAogic=al methods. but one di&ctly accessible by &eti&ary 'c&&inat~&'~~ti#&. Indeed, "having asked ourselves what structure such n-c;icuits posse&,
more &raquo; ... were \$bEe to find an answer, at leaat when n=2 1. lFre&inti
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