Apps on Mathematics

Walter Fendt
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www.walter-fendt.de/html5/men (HTML5, 60 apps, 2023-10-16)
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(2023-08-10)
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Arithmetic

Number Pyramid 05/01/2023 - 05/02/2023
Abacus 08/06/2023 - 08/07/2023
Calculation without Rounding Errors 06/22/2020 - 08/17/2020
Unit Conversion 03/25/2001 - 04/19/2017
Primyphos - a Game about Prime Factorization 10/18/1998 - 11/20/2015
Table of Prime Numbers from 1 to 1 000 000 000 000 10/17/2003 - 07/27/2023

Algebra

Online Calculator Algebra 08/17/2020 - 08/21/2021
Online Calculator Congruence Classes 07/21/2022 - 07/26/2022
Online Calculator Galois Fields 08/05/2022 - 08/13/2022
Online Calculator Legendre, Jacobi, and Kronecker Symbol 07/04/2023 - 07/25/2023

Plane Geometry

Angles at Parallel Lines 03/21/2006 - 04/05/2018
Sum of Angles in a Triangle 06/11/1998 - 07/27/2023
Simple Geometric Transformations 06/19/1999 - 08/01/2023
Thales' Circle 06/17/1998 - 07/27/2023
Special Lines and Circles in a Triangle 10/25/1998 - 07/28/2023
Circumcircle of a Triangle 11/25/1997 - 07/28/2023
Incircle of a Triangle 11/04/1998 - 07/28/2023
Cyclic Quadrilateral (Inscribed Quadrilateral) 11/01/1997 - 01/17/2016
Tangential Quadrilateral (Circumscribed Quadrilateral) 10/01/2000 - 01/17/2016
Regular Polygons (2 apps) 04/27/2018 - 12/03/2022
Angles at the Circle 11/01/1997 - 07/28/2023
Intercept Theorem 04/27/2000 - 04/26/2017
Pythagorean Theorem (1) 02/19/2001 - 07/30/2023
Pythagorean Theorem (2) 11/01/1997 - 07/30/2023
Twin Circles of Archimedes 04/11/2000 - 10/18/2015
Circle Inversion 03/23/2017 - 04/22/2017
Tangent Circles 10/05/2017 - 07/30/2023
Problem of Apollonius (10 apps) 12/27/2008 - 03/19/2017
Pappus Chain 03/04/2005 - 07/30/2023
Circumference and Area of a Circle 11/22/2002 - 07/31/2023

Stereometry

Platonic Solids 06/08/1998 - 07/31/2023
Volume of a Sphere (Cavalieri's Principle) 09/04/2000 - 07/31/2023

Trigonometry

Sine, Cosine and Tangent of an Angle 12/25/1997 - 07/27/2023

Spherical Geometry

Spherical Triangle 02/06/1999 - 08/01/2023
Spherical Distance between Two Points 01/16/2021 - 08/02/2023

Analytic Geometry

Components of a Vector 07/22/1998 - 08/07/2023
Vector Equation of a Line in Three-Dimensional Space 09/16/1999 - 08/08/2023

Analysis

Slope of a Secant / Tangent Line 02/22/1998 - 08/08/2023
First and Second Derivative of a Function 10/10/1999 - 08/08/2023
Tangents to Graphs of Functions 09/06/2017 - 08/08/2023
Osculating Circles to Graphs of Functions 09/06/2017 - 08/09/2023

Special Curves

Epicycloids and Hypocycloids 10/23/2017 - 08/09/2023
Right Strophoid 11/09/2020
Elliptic Curves 11/19/2020 - 11/22/2020

Complex Numbers

Arithmetic Operations with Complex Numbers 12/04/1999 - 08/09/2023

Logic

Online Calculator Propositional Logic 08/18/2021 - 08/20/2021

Recreational Mathematics

Three Jugs Problem 09/02/1998 - 07/08/2015
Tower of Hanoi 02/06/2022 - 02/07/2022
15 Puzzle 07/24/2023 - 07/25/2023
Queens Puzzle 10/16/2023

Walter Fendt, October 16, 2023
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