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Dunford N., Schwartz J., Bade W.G. — Linear operators. Part 2
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Íàçâàíèå: Linear operators. Part 2
Àâòîðû: Dunford N., Schwartz J., Bade W.G.
Àííîòàöèÿ: In mathematics, a linear map (also called a linear mapping, linear transformation or, in some contexts, linear function) is a mapping V ↦ W between two modules (including vector spaces) that preserves (in the sense defined below) the operations of addition and scalar multiplication. An important special case is when V = W, in which case the map is called a linear operator, or an endomorphism of V. Sometimes the definition of a linear function coincides with that of a linear map, while in analytic geometry it does not.
A linear map always maps linear subspaces to linear subspaces (possibly of a lower dimension); for instance it maps a plane through the origin to a plane, straight line or point.
In the language of abstract algebra, a linear map is a homomorphism of modules. In the language of category theory it is a morphism in the category of modules over a given ring.
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Ïðåäìåòíûé óêàçàòåëü
Characterizations, of (394—396)
Characterizations, of Hilbert space (393—394)
Characterizations, of the space of continuous functions (394—397)
Charzynski, Z. 91
Chevalley, C. 79
Chiang, T.P. 928
Christian, R.R. 233 382 543 927
Clarkson, J.A. 235 384 393 396 397 473
Clifford, A.H. 82
Closed curve, positive orientation of (225)
Closed graph theorem II.2.4 (57)
Closed graph theorem, remarks on (83—85)
Closed linear manifold spanned by a set II.1.4 (50)
Closed operator, definition II.2.3 (57)
Closed orthonormal system, definition IV.14.1 (357)
Closed orthonormal system, study of IV.14
Closed set, definition I.4.3 (10)
Closed set, definition, properties I.4.4—5 (10)
Closed sphere II.4.1 (70)
Closed unit sphere II.3.1 (59)
Closure of a set, criterion to be in I.7.2 (27)
Closure of a set, definition I.4.9 (11)
Closure of a set, properties of the closure operation I.4.10—11 (11—12)
Closure of a symmetric operator, definition XII.4.7 (1226)
Closure theorems XI.4 (978—1001)
Closure theorems, Wiener XI.4.7 (986)
Closure theorems, Wiener , as a Tauberian theorem XI.5.C (1003)
Closure theorems, Wiener , generalization of XI.4.21 (996)
Cluster point, of a set I.7.8 (29)
Coddington, E.A. 1433 1434 1498 1503 1587 1590 1591 1592
Cohen, I.S. 400
Cohen, L.W. 543 729
Collatz, L. 610 928
Collins, H.S. 466
Commutator of two operators, definition X.9 (934)
Compact operator, criteria for and properties of VI.9.30—35 (515)
Compact operator, definition VI.5.1 (485)
Compact operator, elementary properties VI.5
Compact operator, ideals of (552—553)
Compact operator, in VI.9.51—57 (517—519)
Compact operator, in C VI.9.45 (516)
Compact operator, remarks concerning (539) (609—611)
Compact operator, representation of (547—551)
Compact operator, representation of, into C(S) VI.7.1 (490)
Compact operator, representation of, on VI.8.11 (507)
Compact operator, representation of, on C(S) VI.7.7 (486)
Compact operator, spectral theory of VII.4 VII.5.35 VII.8.2
Compact space, conditional compactness I.5.5 (17)
Compact space, criteria for compactness I.5.6 (17) 1.7.9 1.7.12
Compact space, definition I.5.5 (17)
Compact space, metric spaces I.6.13 (21—22) I.6.18—19
Compact space, properties I.5.6—10 (17—18)
Compact space, sequential compactness, definition I.6.10 (21)
Compact space, weak sequential compactness, conditions for in special B-spaces IV.15
Compact space, weak sequential compactness, definition II.3.25 (67)
Compact space, weak sequential compactness, in reflexive spaces II.3.28 (68)
Complement, and projections (553—554)
Complement, of a set (2)
Complement, orthocomplement IV.4.8 (249)
Complement, orthogonal II.4.17 (72)
Complemented lattice (43)
Complete and -complete lattice (43)
Complete metric space, compact I.6.15 (22)
Complete metric space, definition I.6.5 (19)
Complete metric space, properties I.6.7 (20) I.6.9
Complete normed linear space see "B-space"
Complete orthonormal set, in Hilbert space IV.4.8 (250)
Complete partially ordered space, definition I.3.9 (8)
Completely regular space, compactification of IV.6.22 (276) IX.2.16
Completely regular space, definition IV.6.21 (276) IX.2.15
Completion of a normed linear space (89)
Complex numbers, extended (3)
Complex vector space (38) (49)
Conditional compactness, definition I.5.5 (17) see
Cone, definition V.9.9 (451)
Confluent hypergeometric function XIII.8 (1526)
Conjugate space, definition II.3.7 (61)
Conjugate space, representation for special spaces IV.15
Conjugations, in groups (85)
Conjugations, in Hilbert space XII.4.17 (1231)
Connected set in n-space (230)
Connected space I.4.12 (12)
Continuity of functionals and topology V.3.8—9 (420—421) V.3.11—12
Continuity of functionals and topology, criteria for existence of continuous linear functionals V.7.3 (430)
Continuity of functionals and topology, in bounded -topology V.5.6 (428)
Continuity of functionals and topology, non-existence in , 0<p<1 V.7.37 (438)
Continuous (or -continuous set functions), criterion for III.14.13 (181)
Continuous (or -continuous set functions), definition III.4.12 (131)
Continuous (or -continuous set functions), derivative of III.12.6 (214)
Continuous (or -continuous set functions), relation with absolutely continuous functions (338)
Continuous (or -continuous set functions), relation with integrable functions III.10
Continuous functions see also "Absolutely continuous functions"
Continuous functions, as a B-space, additional properties IV.15
Continuous functions, as a B-space, definition IV.2.14 (240)
Continuous functions, as a B-space, remarks concerning (373—386)
Continuous functions, as a B-space, study of IV.6
Continuous functions, characterizations of C-space (396—397)
Continuous functions, criteria and properties I.4.16—18 (13—14) I.6.8 I.7.4
Continuous functions, criteria for the limit to be continuous I.7.7 (29) IV.6.11
Continuous functions, definition I.4.15 (18)
Continuous functions, density in TM and III.9.14 (170) IV.8.19
Continuous functions, existence of non-differentiable continuous functions I.9.6 (33)
Continuous functions, existence on a normal space I.5.2 (15)
Continuous functions, extension of I.5.3—4 (15—17) 1.6.17
Continuous functions, on a compact space I.5.8 (18) I.5.10
Continuous functions, representation as a C-space, almost periodic functions IV.7.6 (285)
Continuous functions, representation as a C-space, bounded functions IV.6.18—22 (274—277)
Continuous functions, special C-spaces (397—398)
Continuous functions, uniform continuity I.6.16—18 (23—24)
Continuous functions, uniform continuity, of almost periodic functions IV.7.4 (283)
Convergence of filters I.7.10 (30)
Convergence of functions IV.15
Convergence of functions, -uniform, criteria for III.6.2—3 (145) III.6.12
Convergence of functions, -uniform, definition, III.6.1 (145)
Convergence of functions, almost everywhere, criteria for III.6.12—13 (149—150)
Convergence of functions, almost everywhere, definition III.1.11 (100)
Convergence of functions, almost everywhere, properties III.6.14-17 (150-151)
Convergence of functions, in criteria for III.3.6—7 (122—124) III.6.15 III.9.5 IV.8.12—14 (388)
Convergence of functions, in measure (or in -measure), counter examples concerning III.9.4 (169) III.9.33
Convergence of functions, in measure (or in -measure), definition III.2.6 (104)
Convergence of functions, in measure (or in -measure), properties III.2.7—8 (104—105) III.6.2—3 III.6.13
Convergence of functions, quasi-uniform, definition IV.6.10 (268)
Convergence of functions, quasi-uniform, properties IV.6.11—12 (268—269) IV.6.30—31
Convergence of functions, uniform, definition I.7.1 (26)
Convergence of functions, uniform, properties I.7.6 7 (28—29)
Convergence of sequences, generalized I.7.1—7 (26—29)
Convergence of sequences, in a metric space I.6.5 (19)
Convergence of sequences, in special spaces IV.15
Convergence of sequences, weak convergence in a B-space II.3.25 (67)
Convergence of series in a B-space, absolute (93)
Convergence of series in a B-space, unconditional (92)
Convergence of sets, definition (126—127)
Convergence of sets, measurable sets in III.7.1 (158)
Convergence of sets, properties III.9.48 (174)
Convergence of sets, remarks on (389—392)
Convergence of sets, set functions III.7.2—4 (158—160) IV.8.8 IV.9.4—5 IV.9.15 IV.10.6 IV.15
Convergence theorems IV.15
Convergence theorems, Alexandroff theorem on convergence of measures IV.9.15 (316)
Convergence theorems, Arzela theorem on continuous limits IV.6.11 (268)
Convergence theorems, Banach theorem for operators into space of measurable functions IV.11.2—3 (332—333)
Convergence theorems, Egoroff theorem on a.e. and -uniform convergence III.6.12 (149)
Convergence theorems, Fatou theorem on limits of integrals III.6.19 (152) III.9.35
Convergence theorems, for functions of an operator, by inverting sequences VIII.2.12 (650)
Convergence theorems, for functions of an operator, examples of VII.8
Convergence theorems, for functions of an operator, in finite dimensional spaces VII.1.9 (559) see
Convergence theorems, for functions of an operator, in general spaces VII.3.13 (571) VII.3.23 VII.5.32
Convergence theorems, for functions of an operator, study of VII.7
Convergence theorems, for kernels III.12.10—12 (219—222)
Convergence theorems, for linear operators in F- and B-spaces II.1.17—18 (54—55) 11.3.6 (80—82)
Convergence theorems, Lebesgue dominated convergence theorem III.3.7 (124) III.6.16 IV.10.10
Convergence theorems, Moore theorem on interchange of limits I.7.6 (28)
Convergence theorems, Vitali theorem for integrals III.8.6 (122) III.6.15 III.9.45 IV.10.9
Convergence theorems, Vitali — Hahn — Saks theorem for measures III.7.2—4 (158—160)
Convergence theorems, Weierstrass theorem on analytic functions (228)
Convex combination V.2.2 (414) see "Convex "Convex
Convex function, definition VI.10.I (520)
Convex function, study of VI.10
Convex hull V.2.2 (414)
Convex set II.4.1 (70)
Convex set, definition V.1.1 (410)
Convex set, study of V.1—2
Convex space, locally V.2.9 (417) (471)
Convex space, strictly V.11.7 (458)
Convex space, uniformly, defined II.4.27 (74)
Convex space, uniformly, remarks on (471—474)
Convexity theorem of M. Riesz VI.10.11 (525)
Convexity theorem of M. Riesz, applications of VI.11
Convolution of functions, as an operator in XI.3.3 (954)
Convolution of functions, definition VIII.1.23 (633)
Convolution of functions, inequalities concerning VI.11.6—12 (528—529)
Convolution of functions, properties VIII.1.24—25 (634—635) XI.3.1
Convolution of measures VIII.2.3 (643)
Cooke, R.G. 80 926 927
Cooper, J.L.B. 927 932 1258 1273
Correspondence see "Function"
Coset, definition (35)
Countably additive set function see also "Set function"
Countably additive set function, countable additivity of the integral III.6.18 (152) IV.10.8
Countably additive set function, definition III.4.1 (126)
Countably additive set function, extension of III.5
Countably additive set function, integration with respect to III.6 IV.10
Countably additive set function, properties IV.9 IV.15
Countably additive set function, spaces of III.7 IV.2.16—17
Countably additive set function, study of III.4
Countably additive set function, uniform countable additivity III.7.2 (158) III.7.4 IV.8.8—9 IV.9.1
Countably additive set function, weak countable additivity, definition (318)
Countably additive set function, weak countable additivity, equivalence with strong IV.10 (818)
Covering of a topological space, definition I.5.5 (17)
Covering of a topological space, Heine — Borel covering theorem (17)
Covering of a topological space, in the sense of Vitali, definition III.12.2 (212)
Covering of a topological space, in the sense of Vitali, Vitali covering theorem III.12.3 (212)
Covering of a topological space, Lindeloef covering theorem (12)
Cronin, J. 92
Cross product see "Product"
Curve see "Jordan curve" "Rectifiable
D'Alembert, J. 1582
da Silvas Dias, C.L. 399
Daniell, P.J. 381—382
Darboux, G. 1588
Davis, H.T. 80
Day, M.M. 82 233 393—394 398 463 729
Dcrwker, Y.N. 723—724 729
De Morgan, rules of (2)
Decomposition of measures and spaces, Hahn decomposition III.4—10 (129)
Decomposition of measures and spaces, Jordan decomposition, for finitely additive set functions III.1.7 (98)
Decomposition of measures and spaces, Jordan decomposition, for measures III.4.7 (128) III.4.11
Decomposition of measures and spaces, Lebesgue decomposition III.4.14 (132)
Decomposition of measures and spaces, Saks decomposition IV.9.7 (308)
Decomposition of measures and spaces, Yosida — Hewitt decomposition (293)
Deficiency indices and spaces, definition XII.4.9 (1226)
Delsarte, J. 1626
Dense convex sets V.7.27 (437)
Dense linear manifolds V.7.40—41 (438—439)
Dense set, definition I.6.11 (21)
Dense set, density of continuous functions in TM and III.9.17 (170) IV.8.19
Dense set, density of simple functions in III.3.8 (125)
Dense set, nowhere dense set I.6.11 (21)
Density of the natural embedding of a B-space into in the topology V.4.5—6 (424—425)
Derivative, chain rule for III.13.1 (222)
Derivative, existence of III.12.6 (214)
Derivative, of a set function III.12.4 (212)
Derivative, of functions III.12.7—8 (216—217) III.13.3 III.18.6
Derivative, of Radon — Nicodym (132)
Derivative, properties IV.15
Derivative, references for differentiation (233)
Derivative, space of differentiable functions IV.2.23 (242)
Determinant, definition (44—45)
Determinant, elementary properties of I.13
Diagonal process (23)
Diameter of a set, definition, I.0.1 (19)
Diametral point V.11.14 (459)
Dieudonne, J.A. 82 84 94 235 387—388 389 391 395 399—400 402 460 462—463 465 466 539 541
Differentiability of the norm, remarks on (471—473) (474)
Differential calculus see also "Derivative"
Differential calculus, Frechet differential (92)
Differential calculus, in a B-space (92—93)
Differential equations, solutions of systems of (561) VII.2.19 VII.5.16 VII.5.27
Differential equations, stability of VII.2.20—29 (564—565)
Differential operator, boundary condition at an end point for XIII.2.29 (1304)
Differential operator, boundary condition for XIII.2.17 (1297)
Differential operator, boundary form for XIII.2.1 (1287)
Differential operator, boundary matrix for XIII.2.1 (1287)
Differential operator, boundary value for XIII.2.17 (1297)
Differential operator, bounded below XIII.7.20 (1451) XIII.9.c
Differential operator, branching point of XIII.7.62 (1490)
Differential operator, characteristic equation of, at iofinity XIII.8 (1527)
Differential operator, complete set of boundary values for XIII.2.17 (1297)
Differential operator, determining set for XIII.5.22 (1374)
Differential operator, essential spectrum of XIII.10.E (1607)
Differential operator, finite below XIII.7.25 (1455)
Differential operator, first characteristics of XIII.8 (1527)
Differential operator, formal XIII.1.1 (1280)
Differential operator, formal adjoint of XIII.2.1 (1287)
Differential operator, formally positive XIII.7.6 (1439)
Differential operator, formally selfadjoint XIII.2.1 (1287)
Differential operator, Green's formula for XIII.2.4 (1288)
Differential operator, in XIII.9.E (1549)
Differential operator, indicial equation of XIII.8 (1504)
Differential operator, irregular formal XIII.1 (1280)
Differential operator, mixed boundary condition XIII.2.29 (1304)
Differential operator, nonselfadjoint XIII.9.13 (1540)
Differential operator, real boundary value for XIII.2.29 (1304)
Differential operator, regular formal, XIII.1 (1280)
Differential operator, regular, irregular, singular points for XIII.8 (1504)
Differential operator, separated boundary conditions XIII.2.29 (1304)
Differential operator, singular boundary value of second order for XIII.10.D (1604)
Differential operator, Stokes lines of XIII.8 (1527)
Differential operator, Sturm — Liouville XIII.2 (1291) XIII.9.F
Differentiation theorems VIII.9.13—14 (719—720) see
Dimension of a Hilbert space, as a criterion for Isometric isomorphism IV.4.16 (254)
Dimension of a Hilbert space, definition IV.4.15 (254)
Dimension of a Hilbert space, invariance of IV.4.14 (258)
Dimension of a linear space, definition (36)
Dimension of a linear space, invariance of I.14.2 (44)
Dimension of a linear space, of a B-space (91—92)
Dines, L.L. 466
Dini, U. 360 383 1583
Dirac, P.A.M. 402 1585 1648 1680
Direct product, of B-spaces (89—90)
Direct sum, of B-spaces (89—90)
Direct sum, of Hilbert spaces IV.4.17 (256)
Direct sum, of linear manifolds in a linear space (87)
Direct sum, of linear spaces (87)
Directed set, definition I.7.1 (26)
Disconnected, extremally (398)
Disconnected, totally (41) see
Disjoint family of sets, definition (2)
Distinguish between points, definition IV.6.15 (272)
Distributions XIV.8
Distributions, carrier or support of XIV.8.11 (1650)
Distributions, definition XIV.3.2 (1645)
Ditkin, V.A. 1161
Divisor of zero IX.1.27 (861)
Dixmier, J. 94 398 538 886 935
Dixon, A.C. 1588
Doeblin, W. 730
Domain, in complex variables (224)
Domain, of a function (2)
Dominated Convergence Theorem III.8.7 (124) III.6.16 IV.10.10
Dominated ergodic theorem, k-parameter continuous case in VIII.7.10 (694)
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