; TeX output 2005.11.01:0341 Kb{color push Blackhtml:color push gray 0 color pop html:M color popK{html: html: ʍ color push Black color popDt G G cmr17Krewqeras's7tNarayanaNumbserIdentityHasaSimpleDyckPathfb fInqterpretation-J bXQ cmr12DrAVIDCALLANfc DepartmenrtofStatistics UnivrersityofWisconsin-Madison MedicalScienceCenrter 1300UnivrersityAve ۈMadison,WIP53706-1532 fN cmbx12callan@stat.wisc.edu* Oct28,2005:GermainKrewreras["html:color push cmyk 0 1 0 01 html: color pop, html:color push cmyk 0 1 0 02 html: color pop ʤ]provedthat#ō8b1#9[ z /tN
g cmmi12n+r6+1Tqu
cmex10ō]pn+r6+1YyrZr `q qō n+r6+1Yy sn ^q .= 2 cmmi8r URX
ҍs|{Y cmr8=0ōo1۟[ z
n qō2Q{nYy(r6!",
cmsy10 sBqKqōg6nYyTg@r6 s+1 q h
qō =e2n+sYy >B2n "q :$UYReplacingr>6bryr6 1,thisidentitycanbSerewrittenas"RwN@(n+rr;rS)UR= Ϳr X
ҍs=1N(n;s)qōX2n+r6 sYyr6 s>Vq M()&3