.

A. N. Krylov's initial interval method

Abel's (or Pringsheim's) theorem

Absolute (Earth magnetic) measure of current intensity

Absolute (Earth magnetic) measure of current intensity

Absolute and conditional convergence, difference

Acceleration during curvilinear motion

Acceleration during curvilinear motion

Access to road on horizontal dam** **

Accumulation of round-off error

Accuracy of the difference method

Accuracy of the Runge-Kutta method

Acoustics, Boundary Value Problems

Adams-Bashforth and Adams-Moulton families

Addition and multiplication of matrices of degree n

Addition and subtraction of fractions

Addition and subtraction of roots

Addition of numbers with different leading signs

Addition of sums and differences

Addition Theorem of Spherical Functions

Adjoint differential expression

Affine transformation, definition

Affine Transformation, resolution of general one

Affine transformation, uniqueness of inverse

AFFINE TRANSFORMATIONS AND THE MULTIPLICATION OF DETERMINANTS

Affine Transformations of Plane and Space

Affine Transformations, Combination

Affine transformations, theorems

Airy's refraction theory of rainbow

Algebraic curve, isolated /Conjugate point

Algebraic equation of degree n

Alterations of first and second kind

Alternating current resistance

Analytic character of the solutions of hyperbolic, elliptic and parabolic equations

Analytic functions of a complex variable

Analytical Definition of Integral

Analytical Geometry, Preliminary Remarks

angle, most important measurement in field

Angle, sharp, right, obtuse, elongated

Angle, simple measurement tool

Antenna ,Vertical/Horizontal over Infinitely Well Conducting Earth

Antenna Current, normalization

Antenna, vertical over arbitrary Earth

Antenna, vertical/horizontal, at height *h* over
infinitely well conducting soil

Antennae, vertical/horizontal, power supply

Apparent contradiction between Newton’s Laws of Motion and reality

Apparent contradiction between Newton’s Laws of Motion and reality

Application of algebraic formulae

Application of first main theorem to an ideal gas

Application of first main theorem to an ideal gas

Application of Ray Theorem to triangle

Application of similarity rules to circle

Application of substitution and integration by parts to infinite integrals

Application of the similarity theorems to right-angled triangle

Application to the theory of linear substitutions of a complex variable

Applications of Differential Calculus

Applications to Natural Sciences

Applications to the theory of numbers

Approximate calculation with total differential

Approximate computation of roots by Horner's scheme

Approximate Expression of Functions by Polynomials

Approximate methods of solution

Approximate number, various operations

Approximate numbers, addition/subtraction

Approximate numbers, admissible errors

Approximate numbers, multiplication/division

Approximate Numbers, Operations

Approximate value by defect

Approximate value in excess

Approximation by rational functions

Approximation of a function by a polynomiaal

Arbitrary sequence of polyhedra

Arc length in rectangular co-ordinates

Arc length of parametrically represented curve

Area and Volume of n-dimensional unit sphere

Area as an Integral, General formula

Area in rectangular co-ordinates

AREA IN SPACE OF ANY DIMENSION

Area of n-dimensional unit sphere

Area of region bounded by curve

Area of similar figures and volume of similar bodies

Area of surface in parametric representation

Areas of Surfaces in more than Three Dimensions

Areas of the mantles of cylinders, cones and truncated cones

Argument, discontinuous/continuous

Arithmetic progression of first order

Arithmetic progression of second order

Arithmetic/ geometric means, theorem

Associate Functions with Negative superscript

Associate Functions, Normalization

Associate Functions, recursion formula

Associative law of multiplication

Audibility bounds of tone heights

Audibility bounds of tone heights

Automorphism of a normal extension

Average length of Gregorian year