The landscape of homological algebra has evolved over the past half-century into a fundamental tool for the working mathematician. This book provides a unified account of homological algebra as it ...

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When students take Algebra 1 matters. If high schoolers don’t pass the course by 9th grade, they’re unlikely to reach college-preparatory math in high school. There are too many courses to get ...

In the fall of 2019, four high schools in a San Francisco Bay Area district shook up many of their ninth grade math classes. Students had traditionally been separated into more than five math courses ...