Advanced Knowledge Problem of the Week 6-28-18: Conjugates of a Subgroup [Group Theory]

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Problem of the Week 6-26-18: Integers and Quartics [Number Theory]

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Ramanujan's Sum Identity

A fascinating result due to Ramanujan!

Advanced Knowledge Problem of the Week 6-21-18: A Problem involving Connected Sets [Topology]

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Problem of the Week 6-19-18: A Polynomial Inequality [Inequalities]

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Advanced Knowledge Problem of the Week 6-14-18: A Limit Involving an Integral [Real Analysis]

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New Video Series on Integration Tricks

Integration is a vast topic with many diverse techniques meant to help find the integrals of functions. Many delightful and elegant methods are used to tackle difficult integrals. This video series talks about a few of the less common, but still very useful, techniques. These videos cover topics such as the tangent half-angle substitution, integration with a parameter, and how symmetry in integrals can be useful. 

Problem of the Week 6-12-18: Making Polynomials Prime [Number Theory]

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Advanced Knowledge Problem of the Week 6-7-18: Order of an Element [Abstract Algebra]

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Problem of the Week 6-5-18: A Composite Polynomial [Number Theory]

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