Integers. set {a and nZ, i.e., a typical element of the group looks like xm +yn for some integers and mZ+nZ is a subgroup of Z. erator of the subgroup 12Z + 21Z.
Integers. set {a and nZ, i.e., a typical element of the group looks like xm +yn for some integers and mZ+nZ is a subgroup of Z. erator of the subgroup 12Z + 21Z.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Let m and n be integers. By mZ+nZ we mean the set {a + b a € mZ,b ≤ nZ} of all sums of an
element of mZ and nZ, i.e., a typical element of the group looks like xm + yn for some integers x and
y.
(a) Show that mZ+nZ is a subgroup of Z.
(b) Find a generator of the subgroup 12Z +21Z.
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