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PlatformYouTube492Bilibili13X3

DisciplineMathematical modeling310Calculus74Algebra51Probability & statistics45Discrete mathematics17Applied mathematics8Geometry2General mathematics1

DifficultyIntroductory339Intermediate115Foundational47Advanced7

StyleWhiteboard225Visual explanation144Lecture137Problem solving2

Length5–15 min287Under 5 min19315–45 min28

TopicMatrices25Derivatives19Vectors14Probability13Integrals12Greatest common divisor10Distributions9Eigenvalues8Linear transformations8Expectation8Graph theory8Time series forecasting8Chain rule7Function limit7Normal distribution7Exponential smoothing forecasting7Basis6Random variables6Independence6Euclidean algorithm6Modular arithmetic6Determinants5Bayes’ theorem5Means5Permutations5Function graph5Definite integral5Conditional probability5Binomial distribution5Game theory modeling5Calculus4Fractions4Power series4Taylor series4Grey prediction model4Regression modeling4ARIMA modeling4Normalization and standardization in modeling4Entropy weight method4Dimensional analysis4Linear programming4Transportation problem4Cluster analysis modeling4Partial differential equations4Ordinary differential equations4Fourier transform3Hypothesis testing3Function approximation3Arc length3Mean value theorem3Partial derivative3Infinite series3Multivariable function3Fuzzy comprehensive 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Mathematical modeling·English

What is a spectrum of a commutative ring R?

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