: The La Roche Site . J. J. Hoffman. ; Bighorn Canyon Archeology . Wilfred M. Husted.

On a Conjecture of a . J . Hoffman

The following question was recently raised by A. J. Hoffman [2]: "If P is a d-polytope, i>0 an integer and &,••*, C* closed convex sets in P, such that every /-flat that meets P meets Uf=i d; do there exist polytopes Di, • • • , Dk, with DiQd for all 1 ̂ i^k, such that if a ¿-flat meets P, it meets Uf_x 7>,?" The purpose of this note is to give a counterexample to this conjecture, with d = 3, t ...

Swinkels , J . M . and Lam , T . J . G . M .

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How , M . J . , Christy , J . H . , Temple , S . E . , Hemmi , J . M . , Justin Marshall , N .

Totally Transanal Laparo-Endoscopic Single-Site ProctoColectomy-Ileoanal J-Pouch (TLPC-J): An Experimental Study of a Novel Approach

Background: The natural orifice transluminal endoscopic surgery (NOTES) has become a commonly considered novel approach in the surgical field. The NOTES provide possibility of operation through the natural orifice and decreases the intentional puncture of the systemic organ and subsequent complications. Totally transanal laparo-endoscopic single-site proctoColectomy-Ileoanal J-Pouch (TLPC-J) is...

On a Conjecture of A. J. Hoffman. Ii

It is proved that certain incidence relations of hyperplanes and closed convex sets in a rf-polytope can be preserved while replacing these sets by suitable polytopal subsets. The purpose of this paper is to prove Theorem 1. IfP is a d-polytope in Ed and Cx, * • •, Cj are closed convex subsets of P, such that every hyperplane that meets P meets (J¿=i Q> tnen there exist poly topes Dx, • • ■ , D...