On maps preserving operators of local spectral radius zero
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Let lsi1" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si1.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=8041826c7d2824d2f00de7e0dc6f9c83" title="Click to view the MathML source">L(X)lass="mathContainer hidden">lass="mathCode">ltimg="si1.gif" overflow="scroll">Llse">(Xlse">) be the algebra of all bounded linear operators on a complex Banach space X. We describe surjective linear maps ϕ   on lsi1" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si1.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=8041826c7d2824d2f00de7e0dc6f9c83" title="Click to view the MathML source">L(X)lass="mathContainer hidden">lass="mathCode">ltimg="si1.gif" overflow="scroll">Llse">(Xlse">) that satisfy
lass="formula" id="fm0010">
lass="mathml">lsi2" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si2.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=310ebd19c92fc17a918fe71dd86451d0" title="Click to view the MathML source">rϕ(T)(x)=0⟹rT(x)=0lass="mathContainer hidden">lass="mathCode">ltimg="si2.gif" overflow="scroll">l">rϕlse">(Tlse">)lse">(xlse">)=0lse">⟹l">rTlse">(xlse">)=0g class="temp" src="/sd/blank.gif">
for every lsi141" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si141.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=101de80a5bf6f8136a953e91f47a14f0" title="Click to view the MathML source">x∈Xlass="mathContainer hidden">lass="mathCode">ltimg="si141.gif" overflow="scroll">xX and lsi31" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si31.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=38cc490618cfd493b4bd335f84309015" title="Click to view the MathML source">T∈L(X)lass="mathContainer hidden">lass="mathCode">ltimg="si31.gif" overflow="scroll">TLlse">(Xlse">). We also describe surjective linear maps ϕ   on lsi1" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si1.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=8041826c7d2824d2f00de7e0dc6f9c83" title="Click to view the MathML source">L(X)lass="mathContainer hidden">lass="mathCode">ltimg="si1.gif" overflow="scroll">Llse">(Xlse">) that satisfy
lass="formula" id="fm0020">
lass="mathml">lsi5" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si5.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=af342ea7f04fae036eecd0da682eef7c" title="Click to view the MathML source">rT(x)=0⟹rϕ(T)(x)=0lass="mathContainer hidden">lass="mathCode">ltimg="si5.gif" overflow="scroll">l">rTlse">(xlse">)=0lse">⟹l">rϕlse">(Tlse">)lse">(xlse">)=0g class="temp" src="/sd/blank.gif">
for every lsi141" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si141.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=101de80a5bf6f8136a953e91f47a14f0" title="Click to view the MathML source">x∈Xlass="mathContainer hidden">lass="mathCode">ltimg="si141.gif" overflow="scroll">xX and lsi31" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si31.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=38cc490618cfd493b4bd335f84309015" title="Click to view the MathML source">T∈L(X)lass="mathContainer hidden">lass="mathCode">ltimg="si31.gif" overflow="scroll">TLlse">(Xlse">). Furthermore, we characterize maps ϕ   (not necessarily linear nor surjective) on lsi1" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si1.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=8041826c7d2824d2f00de7e0dc6f9c83" title="Click to view the MathML source">L(X)lass="mathContainer hidden">lass="mathCode">ltimg="si1.gif" overflow="scroll">Llse">(Xlse">) which satisfy
lass="formula" id="fm0030">
lass="mathml">lsi6" class="mathmlsrc">le="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si6.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=31e70efc1eb5fb46918cba0498e3dc5e">g class="imgLazyJSB inlineImage" height="18" width="317" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S002437951630461X-si6.gif">lass="mathContainer hidden">lass="mathCode">ltimg="si6.gif" overflow="scroll">l">rϕlse">(Tlse">)ϕlse">(Slse">)lse">(xlse">)=0 if and only ifl">rTSlse">(xlse">)=0g class="temp" src="/sd/blank.gif">
for every lsi141" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si141.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=101de80a5bf6f8136a953e91f47a14f0" title="Click to view the MathML source">x∈Xlass="mathContainer hidden">lass="mathCode">ltimg="si141.gif" overflow="scroll">xX and lsi148" class="mathmlsrc">lass="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S002437951630461X&_mathId=si148.gif&_user=111111111&_pii=S002437951630461X&_rdoc=1&_issn=00243795&md5=af4fa2de0891bade88db17bf407ac2ea" title="Click to view the MathML source">T,S∈L(X)lass="mathContainer hidden">lass="mathCode">ltimg="si148.gif" overflow="scroll">T,SLlse">(Xlse">).

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