Question:
Please recommend me some good books on Differential Equations and Linear
Algebra, or anything beneficial to study Mathematics. I am going to be
sophomore in college. And my major is chemistry. But I am interested in
math. I have done with Calculus (Excluded geometry). I am trying to study
Differential Equations and Linear Algebra. And I heard Number theory and
group theory are good. I should like to have advice from you.
Donghwan Rho from Seoul,KOREA.

Replies:
There are many good books on differential equation and linear algebra but
two of my personal favorites are *Elementary Differential Equations and
Boundary Value Problems* by Boyce and DiPrima and *Elementary Matrix
Algebra* by Franz Hohn. Both are good, strong intermediate level texts.
for a start with group theory a book by Hiram Paley *First Course in
Abstract Algebra* is very readable. I have no favorites for number theory.

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