PNG  IHDRWRJ30PLTE@@@ftRNSS pHYsetEXtTitleInftyEditor MathImageytEXtAuthorAdministrator*tEXtDescription $\displaystyle y_{2^{m}-1}-y_{0} \equiv (a_{20}+a_{10})\sum_{x=1}^{2^{m}-1}x+a_{00}(2^{m}-1) \equiv 2^{m-1}(2^{m}-1)(a_{20}+a_{10})+(2^{m}-1)a_{00} {\rm mod}2$ LtEXtCopyrightInftyProject@$tEXtCreation Time r'rr'rr IDATx]k*L DԸC `cF.L()I HbI!u D%{i#*xvdo"FTb1tFDĢmC̈JWi#*(kmшN}B37ÌX wc Q#Dx\=vFD"5XttB{Y-pg=v1#fD#V$ؾA1hJXF@HbI,""ړ^F?"")='/]UCDbyXЊl,΃5/cw 1ݩ ?WT>^!v؂7&p_E΀ݫZUScBoLb+hSJIc ި2AJv,g3TIa ި2Ch9^)戾+O_ϟ"QxZ ~t@&j/4oǚh0Ma{3\.Q9R,p҇"6Vaf>8ˊi_|e&$u4ːܰPbEcC)L$] u8Q0=@j6L eЦ#qsuzT=nMP $X0HZ rA,)eF|I,Ozl*֝w??=˙Z% in{=TnU;b}>Ѝj$2/;X|K6X2wMN^ rsit5+ gA0Vэ %b|K\͇nNl%|BtuhcJ[4|Z9Ar%vOXlJ b4~@p`Rߨd7$u\SLy^ 9z&;'癕Vd2ٝ=gowfw˲A5` $3t_M/ًUaBLp̯{ٳr'4P6w*8Oٹ1scWhB^+e<[91Óq7!' ~?\zRv`A[#h!`س XK_P1kpəAuo#?&/ANss֘z7% "6&_SfFx>61gι5FWpoxrs"-Z/3LN|!^*D7sV$؛@^\0oA?KOŢ˧!B]8WC¼Y!Nb3<'q) "!uz3QXnߚw,Eeuk?,u=9 š##/usxD*֞DII,nXtIY~$*HbJ,c6 "" "s·0EDb%,!u $$ց:XB@HbI!u $$ց:XB1V鎨nIENDB`