N
nabla operator
--- definition, 656
--- divergence, 656
--- gradient, 656
--- rotation, 656
--- twice applied, 657
--- vector gradient. 656 , 657
NAND function, 288
nautical, radio bearing, 171
navigation, 172
negation, 286
--- Boolean function, 344
--- double, 288
neighborhood, 605
--- point, 605
Neper
--- equations, 167
--- logarithm, 9
--- rules, 169
net
--- chart, 123
--- more than three variables, 127
--- three variables, 123
--- isometric, 675
--- points, 933
Neumann
--- problem, 670
--- series, 568 , 587
Newton
--- field, point-like mass, 646
--- interpolation formula, 917
Newton method, 885 , 897
--- adaptive, 951
--- modified, 885
non-linear operators, 632
--- approximation sequence, 632
--- modified, 632
non-linear optimization, 869
--- damped, 869
niveau line, 117
nodal plane, 541
node, 809
--- approximation interval, 931
--- differential equation, ordinary, 494
--- saddle node, 804 , 809
--- stable, 804
--- triple, 834
nominal rate, 22
nomogram, 123
nomography, 123
non-negative integer, 1
NOR function, 288
norm
--- axioms, linear algebra, 258
--- Euclidean, 318
--- integral, 639
--- isomorphism, 626
--- matrix, 258
--- column sum norm, 259
--- row sum norm, 259
--- spectral norm, 259
--- subordinate, 259
--- uniform norm, 259
--- operator norm, 619 , 802
--- pseudonorm, 624
--- residual vector, 277
--- seminorm, 624
--- .s'-norm, 365
--- space, 611
--- t-norm, 365
--- vector, 258
--- Euclidean norm, 258
--- matrix norm, 258
--- sum norm, 258
normal distribution, 758
--- logarithmic normal distribution, 759
--- observational error, 72
--- standard normal distribution, 759
--- standard, table, 1091
--- two-dimensional, 780
normal equation, 894 , 919 , 921
--- system, 782 , 920
normal form, 345
--- equation of a surface, 220
--- Jordan, 282
--- principal conjunctive, 345
--- principal disjunctive, 345
normal plane, space curve, 238 , 241
normal vector
--- plane, 214
--- plane sheet, 663
--- surface, 244
normal, plane curve, 226
normalization condition, 541
normalizing factor, 195
northern direction
--- geodesical, 169
--- geographical, 169
northwest corner rule, 858
notation
--- Polish notation, 355
--- postfix notation, 355
--- prefix notation, 355
--- reversed polish, 355
--- /7, -tuple, 117
number, 1
--- approximation, 4
--- cardinal, 291 , 298
--- complex, 34
--- absolute value, 35
--- addition, 36
--- algebraic form, 34
--- argument, 35
--- division, 37
--- exponential form, 35
--- main value, 35
--- multiplication, 36
--- power, 37
--- subtraction, 36
--- taking the root, 38
--- trigonometric form, 35
--- composite, 320
--- conjugate complex, 36
--- imaginary, 34
--- integer, 1
--- interval, 2
--- irrational, 2 -4, 297
natural, 1
non-negative, 1
--- random, 770
--- rational, 1 , 3
--- real, 2
--- taking of root, 8
--- sequence, 404
--- convergent, 606
--- metric space, 606
--- transcendental, 2
number line, extended, 635
number plane, complex, Gauss, 34
number representation, computer internally, 936 , 938
number system, 936
--- binary, 937
--- decimal, 937
--- hexadecimal, 937
--- octal, 937
number theory, elementary, 320
numbers
--- Bernoulli. 412
--- Euler, 412
--- Fermat, prime, 321
--- Fibonacci, 325 , 845
--- Mersenne, prime, 321
--- prime. 320
numerical
--- analysis, 884
--- axis, 1
--- calculations, computer, 939
--- library (numerical methods), 884
nutation angle, 211
Nystrom method. 573
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