New posts in infinitesimals

Definition of tangent

calculus infinitesimals

How is the concept of the limit the foundation of calculus?

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First year calculus student: why isn't the derivative the slope of a secant line with an infinitesimally small distance separating the points?

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Products of Infinitesimals

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Defining the Derivative using Internal Set Theory (Non Standard Analysis)

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What is the topology of the hyperreal line?

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What meaning did Riemann assign to $dx$?

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If $dx$ is just syntax and not an infinitesimal then why do we apply operations to it?

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What's an example of an infinitesimal?

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What does limit actually mean?

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Who gave you the epsilon?

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Nontrivial trivial integrals

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Justification of algebraic manipulation of infinitesimals

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little-o and its properties

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Intuition for a physical real line vs. a physical "hyperreal line"

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More numbers between $[0,1]$ or $[1,\infty)$?

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Why is zero the only infinitesimal real number?

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Can we make it equal to x?

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Which universities teach true infinitesimal calculus?

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Is $0$ an Infinitesimal?

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