I am reading T. Y. Lam's book, "A First Course in Noncommutative Rings" (Second Edition) and am currently focussed on Section 1:Basic Terminology and Examples ...(adsbygoogle = window.adsbygoogle || []).push({});

I need help with an aspect of Example 1.14 ... ...

Example 1.14 reads as follows:

I cannot follow why the results in Table 1.16 follow ...

For example, according to Table 1.16 ...

##mr = 0## for all ##m \in M## and ##r \in R## ... but why?

Similarly I don't follow the other entries in the Table ...

Can someone please help ...

help will be much appreciated ...

Peter

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# I Example on Triangular Rings - Lam, Example 1.14

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