What is the meaning of infinitesimal? - Mathematics Stack Exchange An infinitesimal is either a positive infinitesimal, a negative infinitesimal, or zero In $\mathbb {R}$ there is only one infinitesimal, zero - this is precisely the Archimedean property of $\mathbb {R}$
How do you understand Infinitesimals? - Mathematics Stack Exchange There is an $\epsilon$ (infinitesimal) thrown in there as well How do you understand these extremely small values and what do I need to do to account for them when calculating very precise values with them? I know that they are too small to make a difference when dealing with smaller numbers, but when does it start to impact your results?
Definition of an Infinitesimal - Mathematics Stack Exchange Covering 1 4 of Keisler's Elementary Calculus, "Slope and Velocity; The Hyperreal Line" That chapter defines: A number $\\epsilon$ is said to be infinitely small, infinitesimal, if: $-a lt; \\epsil
Are infinitesimals equal to zero? - Mathematics Stack Exchange By far the most direct way to talk about "infinitely short line segments" is to use nonstandard analysis In standard mathematics, there are various ways to make sense of 'infinitesimal' geometry, which is basically what calculus is secretly doing, and what differential geometry does more explicitly
Whats an example of an infinitesimal? - Mathematics Stack Exchange If you want to use infinitesimals to teach calculus, what kind of example of an infinitesimal can you give to the students? What I am asking for are specific techniques for explaining infinitesimal
Is $0$ an Infinitesimal? - Mathematics Stack Exchange For the definition of Infinitesimal, wikipedia says In common speech, an infinitesimal object is an object which is smaller than any feasible measurement, but not zero in size; or, so small t
calculus - infinity times infinitesimal - what happens? - Mathematics . . . and define an infinitesimal number as the difference between a convergent geometric series and its sum: $ x+1 -\displaystyle\sum_ {i=0}^ {n\rightarrow\infty} \left (\frac {x} {x+1}\right)^i$ If the x is the same in both the infinity and the infinitesimal their product will converge to the finite number x (x+1) as n increases without bound
differential geometry - Surface Element in Spherical Coordinates . . . In order to calculate the area of a sphere we cover its surface with small RECTANGLES and sum up their total area Explanation In baby physics books one encounters this expression In each infinitesimal rectangle the longitude component is its vertical side The latitude component is its horizontal side
real analysis - Conditions for substituting equivalent infinitesimals . . . You'll need to complete a few actions and gain 15 reputation points before being able to upvote Upvoting indicates when questions and answers are useful What's reputation and how do I get it? Instead, you can save this post to reference later