Let T_us be the usual topology on R and T_ll be the lower limit topology generated by the unions of {]a,b]/ a,beR;a

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Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Let T_us be the usual topology on R and
TIl be the lower limit topology
generated by the unions of {Ja,b]/
a,beR;asb}. Define f the mapping from
(R, T_us) into (R, T_II) by f(x) = 2x and g
the mapping from (R, T_II) into (R, T_us)
by g(x) = 3x. Then *
%3D
O f and g are both homeomorphisms
f is a homeomorphism but g is not
g is a homeomorphism but f is not
O None of the choices
Transcribed Image Text:Let T_us be the usual topology on R and TIl be the lower limit topology generated by the unions of {Ja,b]/ a,beR;asb}. Define f the mapping from (R, T_us) into (R, T_II) by f(x) = 2x and g the mapping from (R, T_II) into (R, T_us) by g(x) = 3x. Then * %3D O f and g are both homeomorphisms f is a homeomorphism but g is not g is a homeomorphism but f is not O None of the choices
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