; TeX output 2005.12.18:2357 I color push Blackhtml: html: color pop ठ html: html:6fcolor push Black color pop `#3{ G
ptmr7t2-GerbesQboundbycomplexesQofKj G
ptmri7tgre-stacks,andcohomologyl̍ 3{
ptmr7tEttore Aldrov3andi q43{
ptmr7tDepartment ofMathematics,FloridaStateUni v٠ersity RT37allahassee, FL32306-4510,USA 50
pcrr7taldrovandi@math.fsu.eduBUz ؤDecember 18,2005(l̍ color push Black color pop e,6ߌ
ptmb7tAbstract color push Blackj color pop*`W37edene2-gerbesboundbycomple٠xesofbraidedgroup-likgestacks.IXWepro٠veaclassica- `tionN&resultN%intermsofh7ypercohomologygroupswithv aluesinabeliancrossedsquaresandcones`ofmorphisms ofcomple٠xesoflength3.OW37egi v٠eanapplicationtothegeometricconstructionof`certain elementsinHermitianDelignecohomologygroups.#?8ߌ ff
ptmb7tContents{html: html:
Unhtml:9ߌ
3
ptmb7tIntr͏oduction html:w2͍html:1lBackgr͏oundnotions html:C7
lhtml:3{
3
ptmr7t1.1/]Assumptionsandnotations html:.6^..............................color push Black7a color poplhtml:1.2/]VariousDelignecomplexesandcohomologies html:ﶍ.6^....................color push Black8a color pophtml:2lGerbeswithabelianband html:$v10lhtml:2.1/]Gerbesboundbyacomplex html:'덍.6^.............................nrcolor push Black11a color poplhtml:2.2/]Examples html:2.6^.......................................nrcolor push Black12a color poplhtml:2.3/]Furtherexamples html:h.6^...................................nrcolor push Black14a color pophtml:3lGerbesboundbycomplexesoflength3 html: