Discrete Mathematics Letters

Research Published in Pakistan

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Pakistan Science Abstract

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ISSN 2664-2557 · 246 indexed records

2025 articles

  1. On a lower bound for the number of vertices of an integral graph with a given diameter
  2. Bond incident degree indices of fixed-order unicyclic graphs
  3. Associative triples and homomorphisms between travel groupoids on finite geodetic graphs
  4. On the maximum augmented Sombor index of molecular trees with a perfect matching
  5. On the hyperbolic Sombor index and its counterpart
  6. Explicit expression for the product of the classes of fixed-point free involutions
  7. Improved bounds on the domatic numbers of queens graphs
  8. On a conjecture involving the spectral radius and the second Zagreb index of a graph
  9. Elementary proofs of recent congruences for overpartitions wherein non-overlined parts are not divisible by 6
  10. On the square PI index of graphs
  11. What is and is not inside a Cayley graph?
  12. Isomorphism theorems for impartial combinatorial games
  13. Exponential second Zagreb index of connected graphs
  14. On the limitations of ROBDDs in deciding the evasiveness of Boolean functions
  15. Hamiltonicity in directed Toeplitz graphs with s1 = 1 and s2 = 3
  16. On a class of graphs with equal domination and certified domination numbers
  17. On the spectra and energy of the Aα matrix of digraphs
  18. Fifteen series on harmonic numbers and quintic central binomial coeficients
  19. Vertex degrees in grid graphs of permutations
  20. New results regarding the permutation cycle structure of almost Moore digraphs
  21. Polyhedral digital Jordan surfaces
  22. Representation of a trigonometric integral via combinatorial sums
  23. Pattern avoidance in flattened derangements
  24. A note on Hadwiger's conjecture for path-chromatic number
  25. On the atom-bond sum-connectivity spectral radius of unicyclic graphs
  26. Counting Boolean intervals in the weak Bruhat order of a finite Coxeter group
  27. The preservation property of Brouwer’s conjecture
  28. On strongly connected Markov graphs of maps on combinatorial trees
  29. On the [r; s; t]-coloring of the square of cylindrical grids
  30. Bounds on the largest eigenvalue and energy of the connectivity matrix
  31. Products of general Fibonomial coefficients via matrices