| Preface | p. v |
| Introduction to Structural Approach-Overview of the Book | p. 1 |
| Structural Approach to Index of DAE | p. 1 |
| Index of Differential-algebraic Equations | p. 1 |
| Graph-theoretic Structural Approach | p. 3 |
| An Embarrassing Phenomenon | p. 7 |
| What Is Combinatorial Structure? | p. 10 |
| Two Kinds of Numbers | p. 11 |
| Descriptor Form Rather than Standard Form | p. 15 |
| Dimensional Analysis | p. 17 |
| Mathematics on Mixed Polynomial Matrices | p. 20 |
| Formal Definitions | p. 20 |
| Resolution of the Index Problem | p. 21 |
| Block-triangular Decomposition | p. 26 |
| Matrix, Graph, and Matroid | p. 31 |
| Matrix | p. 31 |
| Polynomial and Algebraic Independence | p. 31 |
| Determinant | p. 33 |
| Rank, Term-rank and Generic-rank | p. 36 |
| Block-triangular Forms | p. 40 |
| Graph | p. 43 |
| Directed Graph and Bipartite Graph | p. 43 |
| Jordan-Hölder-type Theorem for Submodular Functions | p. 48 |
| Dulmage-Mendelsohn Decomposition | p. 55 |
| Maximum Flow and Menger-type Linking | p. 65 |
| Minimum Cost Flow and Weighted Matching | p. 67 |
| Matroid | p. 71 |
| From Matrix to Matroid | p. 71 |
| Basic Concepts | p. 73 |
| Examples | p. 77 |
| Basis Exchange Properties | p. 78 |
| Independent Matching Problem | p. 84 |
| Union | p. 93 |
| Bimatroid (Linking System) | p. 97 |
| Physical Observations for Mixed Matrix Formulation | p. 107 |
| Mixed Matrix for Modeling Two Kinds of Numbers | p. 107 |
| Two Kinds of Numbers | p. 107 |
| Mixed Matrix and Mixed Polynomial Matrix | p. 116 |
| Algebraic Implication of Dimensional Consistency | p. 120 |
| Introductory Comments | p. 120 |
| Dimensioned Matrix | p. 121 |
| Total Unimodularity of a Dimensioned Matrix | p. 123 |
| Physical Matrix | p. 126 |
| Physical Matrix | p. 126 |
| Physical Matrices in a Dynamical System | p. 128 |
| Theory and Application of Mixed Matrices | p. 131 |
| Mixed Matrix and Layered Mixed Matrix | p. 131 |
| Rank of Mixed Matrices | p. 134 |
| Rank Identities for LM-matrices | p. 135 |
| Rank Identities for Mixed Matrices | p. 139 |
| Reduction to Independent Matching Problems | p. 142 |
| Algorithms for the Rank | p. 145 |
| Structural Solvability of Systems of Equations | p. 153 |
| Formulation of Structural Solvability | p. 153 |
| Graphical Conditions for Structural Solvability | p. 156 |
| Matroidal Conditions for Structural Solvability | p. 160 |
| Combinatorial Canonical Form of LM-matrices | p. 167 |
| LM-equivalence | p. 167 |
| Theorem of CCF | p. 172 |
| Construction of CCF | p. 175 |
| Algorithm for CCF | p. 181 |
| Decomposition of Systems of Equations by CCF | p. 187 |
| Application of CCF | p. 191 |
| CCF over Rings | p. 199 |
| Irreducibility of LM-matrices | p. 202 |
| Theorems on LM-irreducibility | p. 202 |
| Proof of the Irreducibility of Determinant | p. 205 |
| Decomposition of Mixed Matrices | p. 211 |
| LU-decomposition of Invertible Mixed Matrices | p. 212 |
| Block-triangularization of General Mixed Matrices | p. 215 |
| Related Decompositions | p. 221 |
| Decomposition as Matroid Union | p. 221 |
| Multilayered Matrix | p. 225 |
| Electrical Network with Admittance Expression | p. 228 |
| Partitioned Matrix | p. 230 |
| Definitions | p. 231 |
| Existence of Proper Block-triangularization | p. 235 |
| Partial Order Among Blocks | p. 238 |
| Generic Partitioned Matrix | p. 240 |
| Principal Structures of LM-matrices | p. 250 |
| Motivations | p. 250 |
| Principal Structure of Submodular Systems | p. 252 |
| Principal Structure of Generic Matrices | p. 254 |
| Vertical Principal Structure of LM-matrices | p. 257 |
| Horizontal Principal Structure of LM-matrices | p. 261 |
| Polynomial Matrix and Valuated Matroid | p. 271 |
| Polynomial/Rational Matrix | p. 271 |
| Polynomial Matrix and Smith Form | p. 271 |
| Rational Matrix and Smith-McMillan Form at Infinity | p. 272 |
| Matrix Pencil and Kronecker Form | p. 275 |
| Valuated Matroid | p. 280 |
| Introduction | p. 280 |
| Examples | p. 281 |
| Basic Operations | p. 282 |
| Greedy Algorithms | p. 285 |
| Valuated Bimatroid | p. 287 |
| Induction Through Bipartite Graphs | p. 290 |
| Characterizations | p. 295 |
| Further Exchange Properties | p. 300 |
| Valuated Independent Assignment Problem | p. 306 |
| Optimality Criteria | p. 308 |
| Application to Triple Matrix Product | p. 316 |
| Cycle-canceling Algorithms | p. 317 |
| Augmenting Algorithms | p. 325 |
| Theory and Application of Mixed Polynomial Matrices | p. 331 |
| Descriptions of Dynamical Systems | p. 331 |
| Mixed Polynomial Matrix Descriptions | p. 331 |
| Relationship to Other Descriptions | p. 332 |
| Degree of Determinant of Mixed Polynomial Matrices | p. 335 |
| Introduction | p. 335 |
| Graph-theoretic Method | p. 336 |
| Basic Identities | p. 337 |
| Reduction to Valuated Independent Assignment | p. 340 |
| Duality Theorems | p. 343 |
| Algorithm | p. 348 |
| Smith Form of Mixed Polynomial Matrices | p. 355 |
| Expression of Invariant Factors | p. 355 |
| Proofs | p. 363 |
| Controllability of Dynamical Systems | p. 364 |
| Controllability | p. 364 |
| Structural Controllability | p. 365 |
| Mixed Polynomial Matrix Formulation | p. 372 |
| Algorithm | p. 375 |
| Examples | p. 379 |
| Fixed Modes of Decentralized Systems | p. 384 |
| Fixed Modes | p. 384 |
| Structurally Fixed Modes | p. 387 |
| Mixed Polynomial Matrix Formulation | p. 390 |
| Algorithm | p. 395 |
| Examples | p. 398 |
| Further Topics | p. 403 |
| Combinatorial Relaxation Algorithm | p. 403 |
| Outline of the Algorithm | p. 403 |
| Test for Upper-tightness | p. 407 |
| Transformation Towards Upper-tightness | p. 413 |
| Algorithm Description | p. 417 |
| Combinatorial System Theory | p. 418 |
| Definition of Combinatorial Dynamical Systems | p. 419 |
| Power Products | p. 420 |
| Eigensets and Recurrent Sets | p. 422 |
| Controllability of Combinatorial Dynamical Systems | p. 426 |
| Mixed Skew-symmetric Matrix | p. 431 |
| Introduction | p. 431 |
| Skew-symmetric Matrix | p. 433 |
| Delta-matroid | p. 438 |
| Rank of Mixed Skew-symmetric Matrices | p. 444 |
| Electrical Network Containing Gyrators | p. 446 |
| References | p. 453 |
| Notation Table | p. 469 |
| Index | p. 479 |
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