▁room ▁can ▁only ▁be ▁visited ▁once . ▁Pere c ▁re lies ▁on ▁the ▁mathematical ▁process ▁of ▁a ▁kn ights ▁tour ▁to ▁visit ▁each ▁room . ▁According ▁to ▁the ▁kn ights ▁tour ▁d ile m ma , ▁there ▁is ▁a ▁specific ▁sequence ▁of ▁moves ▁for ▁which ▁a ▁kn ight ▁on ▁a ▁ch ess board ▁can ▁visit ▁each ▁square ▁but ▁once , ▁comple ting ▁the ▁board ▁and ▁arriv ing ▁at ▁the ▁square ▁beside ▁the ▁one ▁it ▁began ▁on . ▁ ▁David ▁F oster ▁Wal lace , ▁known ▁for ▁his ▁mathematics ▁background , ▁struct ured ▁the ▁chap ters ▁of ▁his ▁novel ▁In finite ▁J est ▁following ▁the ▁model ▁of ▁the ▁S ier pin ski ▁G asket , ▁a ▁f ract al ▁structure ▁involving ▁recursive ▁sub div ision ▁of ▁equ il ater al ▁tri angles . ▁ ▁Notable ▁pro ponents ▁In cluding ▁those ▁already ▁mentioned , ▁there ▁are ▁a ▁number ▁of ▁further ▁individuals ▁who ▁are ▁strong ▁pro ponents ▁of ▁combin atory ▁literature . ▁These ▁include : ▁ ▁Harry ▁Matt he ws , ▁the ▁American ▁author ▁whose ▁work ▁manip ul ates ▁language ▁and ▁re lies ▁on ▁mathematical ▁structures ▁Kenneth ▁G olds m ith ▁is ▁an ▁American ▁poet ▁who ▁bel ieves ▁in ▁un cre ative ▁writing , ▁reject ing ▁the ▁traditional ▁convent ions ▁of ▁cre ative ▁writing ▁and ▁res h aping ▁the ▁way ▁language ▁is ▁used ▁ ▁Jacques ▁Rou ba ud , ▁a ▁poet ▁and ▁professor ▁of ▁mathematics , ▁wrote ▁son net s ▁that ▁were ▁mathemat ically ▁struct ured ▁Er asure ▁po ets , ▁such ▁as ▁Ron ald ▁Johnson