Let T_us be the usual topology on R and T_|| be the lower limit topology generated by the unions of {]a,b]/ a,bER;asb}. Define f the mapping from (R, T_us) into (R, T_II) by f(x) = 1 and g the mapping from (R, T_II) into (R, T_us) by g(x) = 4x. Then * f and g are both homeomorphisms None of the choices g is a homeomorphism but f is not f is a homeomorphism but g is not

Advanced Engineering Mathematics
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ISBN:9780470458365
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 T_|
be the lower limit topology generated by
the unions of {]a,b]/ a,bER;asb}. Define f
the mapping from (R, T_us) into (R, T_II) by
f(x) = 1 and g the mapping from (R, T_II) into
(R, T_us) by g(x) = 4x. Then
f and g are both homeomorphisms
None of the choices
g is a homeomorphism but f is not
f is a homeomorphism but g is not
Transcribed Image Text:Let T_us be the usual topology on R and T_| be the lower limit topology generated by the unions of {]a,b]/ a,bER;asb}. Define f the mapping from (R, T_us) into (R, T_II) by f(x) = 1 and g the mapping from (R, T_II) into (R, T_us) by g(x) = 4x. Then f and g are both homeomorphisms None of the choices g is a homeomorphism but f is not f is a homeomorphism but g is not
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