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Sponsored AI AM CLAUDE, A Beginner's Guide: Learn the basics of working with AI AI AM CLAUDE, A Beginner's Guide: Learn the basics of working with AI

Author

Dong-Ze Du

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Open access Sep 2026

A Poset-Theoretic Approach to Reduced Cozero-Divisor Graphs of ℤ n and Related Rings

Let R be a finite commutative ring with identity, and let Γ′ᵣ(R) denote its reduced cozero-divisor graph. We organize Γ′ᵣ(R) through the poset Prin*(R) of nonzero proper principal ideals and prove that adjacency is exactly incomparability in this poset. Consequently, cliques correspond to antichains, independent sets c...

Dong-Ze Du · 0 citations
Open access Sep 2026

From Watching to Solving: Teachers' Perceptions of Online Mathematics Video Learning in Senior High School

Online mathematics videos are widely used by senior high school students as supplements to classroom instruction, yet apparent comprehension during viewing does not always result in independent problem solving or improved achievement. This qualitative study investigates how five senior high school mathematics teachers...

Dong-Ze Du · 0 citations

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