William Graham Sumner

Extending the Gyárfás-Sumner conjecture

Say a set H of graphs is heroic if there exists k such that every graph containing no member of H as an induced subgraph has cochromatic number at most k. (The cochromatic number of G is the minimum number of stable sets and cliques with union V (G).) Assuming an old conjecture of Gyárfás and Sumner, we give a complete characterization of the finite heroic sets. This is a consequence of the fol...

The Sumner County Mass Burning Experience

The fust reactic n to a paper that reports the necessity for complete replacement of air pollution control and ash removal equipment is likely to be "What a disaster". But the matter must be put in proper perspective. By compari­ son with Nashville and other operating plants which have required replacement of major components early on, Gal­ latin doesn't look so bad. Consider fiascos such as th...

Lewis-Sumner syndrome and Tangier disease.

OBJECTIVE To report unusual electrophysiologic data in a patient with Tangier disease in an effort to better understand the pathophysiologic features of the peripheral nerve lesions in this disease. DESIGN Case report. PATIENT A 15-year-old girl had subacute onset of asymmetric neuropathy with persistent conduction block, resembling Lewis-Sumner syndrome. MAIN OUTCOME MEASURES Electrophys...

Graham Lusk *

Lewis-Sumner syndrome associated with infliximab therapy for psoriasis*

The introduction of tumor necrosis factor immunobiolog-ical blocking agents (anti-TNF) has brought great advances in the treatment of autoimmune diseases. Currently, there are five an-ti-TNF BLOCKINdrugs BLOCKINavailable Crohn's disease, or psoriasis. Although they are generally well tolerated, there are some infrequent, but well-documented, cases reported BLOCKINof BLOCKINserious BLOCKINadvers...