PNG  IHDRhg~gAMA asRGB cHRMz&u0`:pQ<bKGD̿ pHYsHHFk>YdIDATxy|߹YIB +DY\R\?glƍ+HhպAk-D >%,jk@JQ̽w9gfnz׽sΝ{,]>ޥ[;xl,dj0e80_W0}c(T|@.%AҀC4Ѕ|Ui UrFQxl7W\b9>091^9(y6tr=,=jREQыHDz2?+q GRM![u]8ZF`s[uRMd⹈zF 0JV0spob/EUk \jȧx8|#U7CJi~n9v|qd"ޙfzxi,fEBdžTlr>YT_Lɶ}Gb^,@c2>x- fA:y4O6<ȷ,[\6FCH$Z -];2Vv !ޥ6~Cmg}?6LQ/(wsH`?3Ͱ =!c=_l. SnY/cnQ,ጰq m+mߛr}wT;V\ P;G^Ka/w+#xW;-"@"Rŏ気ȻQWoO 8rREw[X7z*_K|3PBk%qDa'/i8h9 NsNq3mpH$ўD:L*$҉DI%<_@+^H!-g*X9:W"Ek _-'׶Vj=ڑBtPJ с9cX[Hyda^ɣlA8r% Su ZrbM3r'ϲ"oyw (tylt'lxB5>@QI0J2ʱ+ Ihf7GȊA|6&r+ >;LP/dduL'-1pcqf0֐vk7 Ƞ,Jvi*f(Gdz N^f裾/;,s{ u1NʠGo"/S;1yaWȏ}c&!j)TS;p $AҶYs//:9-+sd{#:*%|Sh"=^@WBSHo $`|'3ݒT3*$׼tʩ*%龲O*el?9,r m`7c)fNЗ;]DTsO߄κ|CS8DGz_`WeU# %" K1zϧ2X8֞Bj^n^QדRH[" BC>V)+=ݿ>@8=d4O"8`OW0_s 5>f' F r+͊oaR-^ۢ;! )|:-f2͌Qxbj r +p 4s+AS`&^[BJe2t$i HxE8,Aj 0PU|z#4Pb40C1R !TfyqڳQa^B# Guu؈&2#=wCY+=.B?j[Td+H #4Ei ŕb(gϟ> [XE%c+r;-0q 13)H[ "FvlOwz2ϥHb](%,b\5a %JL vKt;ؤ,ac>CǒU*@.N;yvbt(fBВ"+,feW"3PH2E3x-g 0"JJ씬<ǝ֘*Y0"&(ܧ͋G1L&zH;+fj~*װb;'vr]+D,'0J8򄶠7YJ]v|}E)Ho{⠋5Vf+|1%l02ȧ֬tKrƳSuI*~mG^xK>^og>B%}J[rk[>Gsxfَ\2'?^v)Ͼ*BinGWXRO*FfmĆQlDS?6E:&xWDtَg:#M:1G9SHɿrNi{j%;(B.Ғ!̓?WtXlfhh4|jw@g S2DZWUH #ux|D~)uzKs,M'H= & Ih((",pqY\`iQȥ|s$p=4y.{pLr`>aE J,m!DP(ǽ|"Mpޙ~p_'TNޠ)|J\J kЬ>O2?2G7-roBUН(f9jk٠G.9F?Htp;RHblm7I7DFb~Gi$K)NQdhVSgDlHVXBɥ| Qɣ͞؅sG1SZ[Ò5V)9cI6 eq /g#%l1{,0񠐸I&E+pw6AVv4ʥeg$X-&JMʊH)I&$ȥQJK)Q @'O!;Q@C,~/P42&9~?4I7KVI ck+MRI#qA/#&BBh5_ś[Y5w2*ӊ+_n6gNEaV*~Q(POԛхחN*JŌOYj]ag=,+atAS>!n-HEsMq q@2mأ^BnNJ3r 3V 0 ni&p9wJ&2t#)33kIgm .DtԩB}SWB))ΧJ]ܡײbiWERV#;kepzc0v9p2eKt4Z} +ay-azQ#(8Jb wac;cRu 5.tސ&HC&*I!4,װCO;@6ՊN6+rll wWG"e`;3|,]#[eQ'QR^ ELyge)^>[C utd{ )b4>Y^w Q1ؽ@;Ѡ,|I[X'"6(únuXȂXHLHBi'?J}ҡ%(Rx@#MDvS$ g0OY.uAX5R7lo"^F LgU~̧Vd*%q+:wHJ;so Ȋ \T.>d<+!,ƚ)BVRUџbviVԻ>yVIiUx9 GU$'ALIƳOKp>a6=[]AKvHt+:@ s n1aTL&Hab;j`N;a);r$r@[u:{ e62Oxw#%qHj:ETM<Ӊ$ jAl>wDD;H-?<]TY0bGP#1QكOiLZ<}(RY`?7dRN-[EGlNaF@%lqK03e}Or)R"9&1 <)dL=˜t[@.uznpY_d&Bӓ&_{XўFBix,vKSdC6M1_d)҆œ,NbEo2C:<):gG\XN`Q{n2_oUH$4ji>Sc@^sHʙqM\='.=_z,гa}vHېud)LnRLMm4щgZIqC蠷)[l;8ObօILUx`/a>GUXUᑠ?6gWx8gp Qf& ^э#*٫0'2z-f 'd:Dgg.F/^~C Rd6!w&ɔ|F:Sс$ړFH&rϪ+~yHyKy*z0N'Ў:LGY(/"ֲi4{J 7r8i-''%PDiDGRhGqܔ|HRv3Y09q*$ԝمړљjo97;7[\7޼RGH d:L$jNƕ­BǬR8>c2 B|\񀦤̊9)R;5þkNwv㜶=hkld۔YK+A|y<:f d߳qv OIefiS=,ZXH0N<z14L1<^B5RDE7k)2Ϥ%RR4%$N BL7+̟gp=%Ә~qy7̴t$:Л.LqUѕrNrJ_rD24d#IС'21S@$~xg!x;=)&L&`2$x"/ҕfXTCLk΀c)DLڗn#$DoVYm7KL%1oe"K7wr֓Bz`~?+Iz (K^}W0U*7bҟn(qrhTQRS$Z&!f[V: ly)P322DH(` m0RV1={RT3NlsyC2( 1]X_ᇬ3cyIAYC{7a,#)!_DߡsJc)lhqd el*&WPH0e+ YQL-B4ǘ4ULlvZuٔSDŽw~3SrUK߉0=F98ݪw(SR|iB/xHhLn^L>˙TSC2SC$,6E7@YD^gT>X7CaDaEMN&6*BT8B9<`WvdI w0)FK۬C;xB1,ne~r$l{)YbJ.2~*i(`(#;>rуJD  $zZq \O9*Y% {Pd)Q)cXZ&a8;tgB63 oJ/O1[s|ʁl9<& /kS!F4 -3pdq [J;v2' 2ğ%pQ:;m']+½a\ % `DPXF(_ R]\Jtt-q\_Hfp̽-zQu{G̳30Ex !"-@.J+F1bhXx=C<\GCG p0pY׏8̅4@!!#UaO,[SB٦HJ#$86k?&v0T5o{QE] 9TiExҎvw~KqlcϲE4j6Qg>vZ)TK" t8_$pTΎJ_cr(P m^PMdE,lSOKKٯ"JQ@U{"eS;I'Md"(xFnx<^u"=]": .U4?c&rh7)XPvY6GLRDg  gCmδT[ܐq i@L7r=PUZ.~+&RNBT Q1+h**%܊N7&Go, JƱFcclkopW`+,j#P9` Y3TY飋>=I''YmܢTu˕۳zX6rmZ'r)%?fqJUdzޞsidu9:p@UW=2xI8eˮ1, R^%x]!wvT=&Q jY1D-0GxR"Sु紵:Ooix|u.'{#]=YQ0Ma0&UV3 3}F6dC5=v )b_LC9ha o:!{gƙ#4DMm "?xѐj$bCTQlin=,`z1 GK9_Z/SD#CiCmC)Mt^yRտ)iGS+rQ$/`#!BT5]BZêl6b[XZ/.ciGe@ p`] ޑGx_*"]O#k7dR{B~;r#\ͅ漘6AQ}ײuRub lYlc&GGS4.dKg*VmpFǙd[IW"7rgK_8|yB8h߽y)slb g{.g{3C!;U>^q.T(v%1<QŃmmQ}y*%E{-^Q|О ([sPoae[RQǚW1_/G*Up.QsIKZ8)+Z8iNpS u%@"Ў$F$҉DI%<_ZB ia<(#2UIj^mK$_QZJG;R 60Z)l )__ϰ I tഢG\#H#$:H{[+{ݝz"E ۑB{/mxJRxT<|ښi5R{{ osVG\zPvdM] ѹ#iT&9U' ڦGԡ'2c\`=$7yNЦ# z&hqu ^_qFhӜ05NJNWCRe:45ҍIX&<*?8NkB63ܤDѮc:WPHOYfۃY V ne//p$`WQb%ȨbSlqmRu5]t vN?d0{G/_uQtiX;(- 02(d֬Dwuq=cBA(U (9ԓgftizyrb0ACFG퇜XTL զpJBteC@nI0F s=f$05dol&s'cJ8m{ h ֐vk7IePRpRAٚ0qưesdRT z-!v9iȡaW蹞$LBԸԥ[1j }nS&'$G%?:H{a([(V^#@9Թԥ[q>)u)[^E t%<ōT{ L 1gxJ1c-L/qҟRŝxztʩ >e@UBpf,lR܉rrjniA醳nz>ĎӨuA==/WeFdH9BIx3aSKx=(i.Պ =+e|["␏Uʊ$G%xF}plXcq{h $nDq `tQ-j|N:Vc`p 7׶N7c $aQT3<,R\n\d&JغזЯR7j;siS4a${<ۢ}|}(fT2F*i PNO)AsD*KƁ̥v`wyvj=${q,o)xOMd:GCE l,gXJeɗc'SClՌ`[<5b+eЖ ^h< 3tr+si7e)nyq4DQ4[ L[X{*(% S(8_V)Ec @XD.zM0VqNmz+bJba=FQP*Bb|o<;[Ұܡ.dW-!B|͋4{jD᭚:2-e D3ɍRJ5;ͭh +@I(xSb+%)1I\'U0tvў6>2_<)W;kEZyk>ͬieiD:S@")3xU[( yIڟbʹZYG ^^?Gt k:h(,)9fqY\`iQȥ|s$p=4y"c.{H% m\}(YB0ChHQ{)";nrMS"UPvN $Ө)s{z tl5|DYMoAL5lP#PFo?Htp;j;c[MR%Q؅Q3  *%DlHVXBu|ɾ<ڛzQ]:LimKX%TR( )J^_{n +hR\]Mr)kY%e7dV nҦA"R42BcR&4! 6@.UJŅYxu(^e4t>SliRJAK#ajYd%;!`ށx^)sx; gRa:3 (U\w0 RSKG.{;qTR'vh ء`ȦZifEnxRbQj)sEvg Xz$YYH);Sr>e+hqtd{ )b4>Y^w Q1ؽ@;Ѡ,|I[X':\8o c[8d޼D:`L?9QTf+٦$}@#MZ'y|r ‚(Z,rqLW߾ݑ*L$3n0eR 5W?)ex;WGVlqk_PRc%%ZfQt$dsHK bFM_ɍ{Sohl h;fcuF_ug!|ҭ0tK>!Mfcp b2)@ QC%wꮓ0ӃN"EZ:/PGPFz-==, Yo:K]!:ÃN"mJ=TĨuո1EQAΧ_H07n(4x˃8Q撏SaXvz {QCE/BT8FfU +÷A]{~VR-[iYj4"uJB zAvz*p&J. tXF!&e6XOlk \Alb=?")Nq!C>:τ|B#Ok^fGWssa{U⺛u'"I @EjaJEʂ;:0:}ț}eAG=3p&2O}hx6 s(Xn$ ӠQm&!EXG4P|l ?,xk[\Y.n.-LjكF_4Ǔ\}IUЕH'f <S=w0fxRK : }iϲ,"c|T'Mi`ОFBiy)%% їȆLBS 9YH"ΎBQeЕs)ŠA\XNH`7 Ч=At dsoe(%Aiv$1] dG%R\uA6'Fj ĹpXDfug!FQcye'w&MR+oKa:#}0"ɉ:V3n{j=;N\F "EK4l)N?)P)#j78)T8ӯak[% 9O ';šKrp2P+6ɭ% ]Chpk٤ Wfq!PQt 2|ysCLj1HDE. Ǒ\\m8w$mKf]Wc[-d9Jj2 xAG6mKeM7Qck1"\G9Td6Vqݬ5_+TsWu(k8=$R% XIWNhlvS܊5XÆHZVw7FSl[9E(q~']ȧ!>ߛ(R1mdhh׳n̢~!E u"v|W5.@mC:|ʆF!m,"f}.l Cƀ?CfoO.Z`Rjn|n ȥB1C]h#(ƧgC?Y&qoRz&PM=϶JgPsVpc2 B|\Jɵګ:8eYyzط| NrӶm ^]l9kiWcxe3<9̥u0g/㸟Mc'x2IF- ,Eh' rq~&I;x\YDE:5RDE7k)2Ϥ%RR4%$N ΋if`@]%4_r\ 3-0 j\UtƗ j2t:r9 Lg{W1hK, X'"O' )SkP_&+ͰĩYR&PB/FHBToVY|-,]3|RC~ЅF!_vg͖ҕ>xPKq^6']f #,y:_8Gi1OA7B89J!̧I%{mY3tZ1P䒝U<)c/C΍0BϺvxbƱrLR]Q-yC:eD = XI!&dedy04|]#262xNF2r5X Jl?!2J `qP 1sdҵkv 7f22!8L3x݃noC"p+WSwfhQh/mUE3@-p9)`PNuh߸l`8{١̸+b}XO(d CO!NSrC,FK۬C;xߙ`!4w[fwa1cDaR 'i(`(#;>z4`wޡ3:=zP*g)ҵ1,fU0Zn~FM YVǺr*[ąCϥIBZvT9ih088yӼ@&iT.eR7:!E)bca|jYR\֐yዲ?Jp/9+ K1=P\yXLJ-J/7..yMHqd^-xA3OX(H'&fs8"BT*u !|ujByo6cӓ\='JMFش8afӤdzn'txvI"3{lkE7#8|P "Ո0*T2N3N ]\Jtt-q\_Hfp̽-zQu{G̳30Ex !"-@.J( t:o%*^/##g8a\8q.4@!!#! B)U,irmt]ҿDv]8 r^Ta~GBN*UDG1^侴K|R}9X@y$q|ȣYB,J1Kj8;@R/ Aֹݱ X.O^- dQ*J ~j7Q4di[s8DFiGЮvl|3`pc'B.qXnzq>`ɶ`-N;:s8 Cr!T[$y-ҏ ojb)XM; ` l,_I/1"c|Ru!6 LROmi$hk :G],[(cfp{R)<1lWjjc++6,*$w;F1 M $ט,!2O rEӥ$rL?l`lrܾ1t^gM`FRKƳU]l K_NB lYWz,~HE D*2- i*@vKoqLu#DVIX!Hw<ބاbھ3u[T)T Nj\moNcXYsa5U0f4`'FS{(%lXy 4TqDrWC%S5UQ֡{Q'ݨZ]IѠ z5 ٤24ȣHE"0DY``CGWN5=zaPIGI&H;!ji*jCd]2Гd{F~Tz֡ dQDCL?dBSۘ9)J#qdS vFh\;-*E6J:;D\ G .5O!@*)eJ !As)9yWKCZHϮb`'D'X_҇5ObC1l2a\O#9 ET8u܀̙ 8Q˷@D‡ՃJ&*Յ?Ro QC-n%ΊOυ\fC\ QB*v)yPOJNs?:!J: "V\BF'@"J')@#D1++X/MO$'Wvc࿉=4GP@$H oGj4xM4n`k!eJ,R-?K.ۃ9 #|*LyM#' IaW 5)+8aܩ%;Z^h8søP:EyK (3pJahēKS v)$2W$-eR?V)Hjु.&ifXBVztSh njjJnvi"TM6CCDZ/" S8uMr]Rsg2D+}jWSrD*Ҽ:,-gN)qT@AgK@-Xq7ޕt[1a['Lb +Z3Iֻt5Îd*T'8ΧX⨴~.M9mS1|޵:6z@=//cRW܀_7Hư y4CJg gUM?b_4CM&4HD>;̲Y#e);=1Fqf{(T0XE>V;P#8:٪Xj"j|P(nǔ,;d+^DO7_T.ȡ&+r`[R 6~J"~PHU7=SHۄi驶!XAz@{4n ">'ۇ^UL >ME7)edo,Umc b!'y“Dhyay0ч,JPr>։'$5Fdz1D'=2Ej+KG7<+Ocb|ȵ=j '֊H3一wrcՉh`g{6QDCT]L,xCg<XvǏdR+N!wvT=&Q jY10R]~|EЩQ[ZGɧѷ4cm: ᓽ{PIa81Ϸ˅r}#yDaܢTu&lCN}!EIb(71@<,B]0"vyƠҁ&Bמ uc&dtf`^r#M(fD2yl*AVȤ0$O1(Y%"x'Q3XְQsIeiBAҀ6]( t1 UB*}8&װ51ų4\E>kkɵ PkQ}{1iC4`h.޿ĥu%4\jZ- a]50bx0vtM!5,ċ c4bd 3&!Zax²~ l{N"bCJ )|F"6đMŶљ1Ϥ 3./@r^?.JG.ǻ>Etٖ8bDE.U fA:y4Em 7+YY/`#!BT5]Kj-ECaU NLf-[XZ/.c:1ix޲oq80.K# }%wom^G3d.g{3C!;Ut\ P;GV1GT`-v<`[T7T8SAs?8*Vj'z*_K|(\J|_g8ɷ|I 97|E 8 NpcpJH$ўDS(D:H:$g$7yNЦ# z&hqu ̒\<8mp&)>Z) vvTlupzXG0FZ(+w ڡG 7)eǘRcj4y4ct`&[ XUX"2y,3},2X[\[T@ k£c O[罣Wpb0:PB4<, 'Ū5k5<]3̞UR  5ZnO9ԓgftQټ1OXs#ԣCNGU,K V* =0ˡTf7GȊANZUԘ$;!AͷOd2w:dږ? N b Yav\,e;br rִ0{3*ћbHHE94T: =דIC.uVLMpEDʒA`E#z,v)WGo 8R f3Cq >C:K%ĥTq'-6rjDJ(f(G(Y~Bmg]g7c5~gmLҮR"¯ gt } &al! "0T*6"cGt=5J3xП c<~E'q=(ռ.-Պ =+e|["t,npc>@8=dT2i0ç+/]Tg4 XL[ax\Q*t^ۢ{DY6aQ"4>Dk-TpKlՠ[ [7 sT&M.`d"lьd<{[րŔ+ ݥH,Ts SJ\!?$ q 2/sG-#]]O}y:N}9E)6VrL=+Oe~$nw!t[TdMC+;,̤/"Lh`5Jrs٧d!uc+r;-0qBsɳHsG/u66݆L9=](%,b\5a %JL vKt;Զax |"63toxǤrG&we[Cq#X:2b؊G4 ȦJaԏ"S~`Ֆ*fuyX<ǝָ SpO׏b0JY2yԓG*i\4ӍTS➶JvdlS]Hhҩ'qU ZUl7k>-*Rs(_ť;5)a5|j͢T[v|o<;>yX-Rs+."c_ {Pt#H3}hdI!rNmbp2å% lGHn\d6jv[VԓQVPP0J4CKmScNЁt-=33m|d2x )=mOXWd/r̓?W9:AlfEDNc3H(`UmHhRT00Z%N##fi:A{nl9;ɯgaGyieXy+8Sd9. '\.PdWeNCچB OdErS;L?E4OKVB ەN94=fDEcMZT7L5P\B mA mҭK!%#9f$g$2ʝ;Js&]vViO>uAJ̆j%4\yF}9>*y7;xu ) ڢ:%M6 ގ8E 6٨PPPhj/6%tEXtdate:create2013-09-24T11:54:23-05:007 %tEXtdate:modify2013-09-24T11:54:23-05:00F}1GtEXtsoftwareImageMagick 6.7.7-10 2013-09-10 Q16 http://www.imagemagick.orgrPtEXtThumb::Document::Pages1/tEXtThumb::Image::height180"tEXtThumb::Image::Width360tEXtThumb::Mimetypeimage/svgpNtEXtThumb::MTime1380041662jZ$tEXtThumb::Size28.7KBBjQtEXtThumb::URIfile:///export/mathcs/www/escher/mediawiki/upload/e/e0/P31m-sample.svghIENDB`