publications

Preprints

1. Preprint

   On the maximum intersecting sets of the general semilinear group of degree 2

   Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   arXiv preprint arXiv:2402.17687 Preprints

   arXiv Bib

   @article{gammal,
     title = {On the maximum intersecting sets of the general semilinear group of degree $2$},
     author = {Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {arXiv preprint arXiv:2402.17687},
     year = {Preprints},
     abbr = {Preprint},
     bibtex_show = {true},
     arxiv = {2402.17687}
   }

2. Preprint

   The Erdős-Ko-Rado Theorem for non-quasiprimitive groups of degree 3p

   Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   arXiv preprint arXiv:2309.09906 Preprints

   arXiv Bib

   @article{degree3p,
     title = {The Erd\H{o}s-Ko-Rado Theorem for non-quasiprimitive groups of degree $3p$},
     author = {Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {arXiv preprint arXiv:2309.09906},
     year = {Preprints},
     abbr = {Preprint},
     bibtex_show = {true},
     arxiv = {2309.09906}
   }

3. Preprint

   On the intersection spectrum of PSL_2(q)

   Behajaina, Angelot, Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   arXiv preprint arXiv:2306.07851 Preprints

   arXiv Bib

   @article{behajaina-psl,
     title = {On the intersection spectrum of $PSL_{2}(q)$},
     author = {Behajaina, Angelot and Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {arXiv preprint arXiv:2306.07851},
     year = {Preprints},
     abbr = {Preprint},
     bibtex_show = {true},
     arxiv = {2306.07851}
   }

4. Preprint

   Infinite families of vertex-transitive graphs with prescribed Hamilton compression

   Kutnar, Klavdija, Marušič, Dragan, and Razafimahatratra, Andriaherimanana Sarobidy

   arXiv preprint arXiv:2305.09465 Preprints

   arXiv Bib

   @article{Hcompression,
     title = {Infinite families of vertex-transitive graphs with prescribed Hamilton compression},
     author = {Kutnar, Klavdija and Marušič, Dragan and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {arXiv preprint arXiv:2305.09465},
     year = {Preprints},
     abbr = {Preprint},
     bibtex_show = {true},
     arxiv = {2305.09465}
   }

5. Preprint

   On cospectral Cayley graphs on the symmetric group

   Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   submitted Preprints

   Bib

   @article{cospectral-cayley-graphs,
     title = {On cospectral Cayley graphs on the symmetric group},
     author = {Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {submitted},
     year = {Preprints},
     abbr = {Preprint},
     bibtex_show = {true}
   }

6. Preprint

   No Hilton-Milner type results for linear groups of degree two

   Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   arXiv preprint arXiv:2111.03829 Preprints

   arXiv Bib

   @article{maleki2021no,
     title = {No Hilton-Milner type results for linear groups of degree two},
     author = {Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {arXiv preprint arXiv:2111.03829},
     year = {Preprints},
     abbr = {Preprint},
     bibtex_show = {true},
     arxiv = {2111.03829}
   }

2024

1. On cocliques in commutative Schurian association schemes of the symmetric group

   Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   Australasian J. Combin. 2024

   Bib

   @article{cocliquesschurianscheme,
     title = {On cocliques in commutative Schurian association schemes of the symmetric group},
     author = {Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {Australasian J. Combin.},
     year = {2024},
     bibtex_show = {true}
   }

2. Intersection density of imprimitive groups of degree pq

   Behajaina, Angelot, Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   J. Combin. Theory Ser. A 2024

   arXiv Bib

   @article{degreepq,
     title = {Intersection density of imprimitive groups of degree pq},
     author = {Behajaina, Angelot and Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {J. Combin. Theory Ser. A},
     year = {2024},
     bibtex_show = {true},
     arxiv = {2207.07762}
   }

3. A short note on non-diagonalizable vertex-primitive digraphs

   Razafimahatratra, Andriaherimanana Sarobidy

   Australas. J. Combin. 2024

   Bib PDF

   @article{non-diagonalizable,
     title = {A short note on non-diagonalizable vertex-primitive digraphs},
     author = {Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {Australas. J. Combin.},
     year = {2024},
     bibtex_show = {true},
     pdf = {non-diagonalizable.pdf}
   }

4. The q-Analogue of Zero Forcing for Certain Families of Graphs

   Fallat, Shaun, Joshi, Neha, Maleki, Roghayeh, Meagher, Karen, Mojallal, Seyed Ahmad, Nasserasr, Shahla, Shirazi, Mahsa N., Razafimahatratra, Andriaherimanana Sarobidy, and Stevens, Brett

   Discrete Appl. Math. 2024

   arXiv Bib URL

   @article{Zq,
     title = {The $q$-Analogue of Zero Forcing for Certain Families of Graphs},
     author = {Fallat, Shaun and Joshi, Neha and Maleki, Roghayeh and Meagher, Karen and Mojallal, Seyed Ahmad and Nasserasr, Shahla and Shirazi, Mahsa N. and Razafimahatratra, Andriaherimanana Sarobidy and Stevens, Brett},
     journal = {Discrete Appl. Math.},
     year = {2024},
     bibtex_show = {true},
     html = {https://doi.org/10.1016/j.dam.2024.01.014},
     arxiv = {2306.01138}
   }

5. On the intersection density of the Kneser Graph K(n,3)

   Meagher, Karen, and Razafimahatratra, Andriaherimanana Sarobidy

   European J. Combin. 2024

   arXiv Bib URL

   @article{psl,
     title = {On the intersection density of the Kneser Graph $K(n,3)$},
     author = {Meagher, Karen and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {European J. Combin.},
     year = {2024},
     bibtex_show = {true},
     html = {https://doi.org/10.1016/j.ejc.2023.103910},
     arxiv = {2205.05118}
   }

2023

1. On the second eigenvalue of certain Cayley graphs on the symmetric group

   Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   Bull. Malays. Math. Sci. Soc. 2023

   arXiv Bib URL

   @article{second-eigenvalues,
     title = {On the second eigenvalue of certain Cayley graphs on the symmetric group},
     author = {Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {Bull. Malays. Math. Sci. Soc.},
     volume = {46},
     year = {2023},
     bibtex_show = {true},
     html = {https://doi.org/10.1007/s40840-023-01553-8},
     arxiv = {2108.13585}
   }

2. On closed distance magic circulants of valency up to 5

   Fernández, Blas, Maleki, Roghayeh, Miklavič, Štefko, and Razafimahatratra, Andriaherimanana Sarobidy

   Discrete Math. 2023

   arXiv Bib URL

   @article{cdm,
     title = {On closed distance magic circulants of valency up to $5$},
     author = {Fernández, Blas and Maleki, Roghayeh and Miklavič, Štefko and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {Discrete Math.},
     volume = {346},
     year = {2023},
     bibtex_show = {true},
     html = {https://doi.org/10.1016/j.disc.2023.113581},
     arxiv = {2212.12441}
   }

3. On the intersection density of the symmetric group acting on uniform subsets of small size

   Behajaina, Angelot, Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   Linear Algebra Appl. 2023

   arXiv Bib URL

   @article{behajaina2022intersection,
     title = {On the intersection density of the symmetric group acting on uniform subsets of small size},
     author = {Behajaina, Angelot and Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {Linear Algebra Appl.},
     year = {2023},
     bibtex_show = {true},
     arxiv = {2201.09727},
     html = {https://doi.org/10.1016/j.laa.2023.01.010}
   }

4. On the intersection density of primitive groups of degree a product of two odd primes

   Razafimahatratra, Andriaherimanana Sarobidy

   J. Combin. Theory Ser. A 2023

   arXiv Bib URL

   @article{razafimahatratra2021intersection,
     title = {On the intersection density of primitive groups of degree a product of two odd primes},
     author = {Razafimahatratra, Andriaherimanana Sarobidy},
     journal = {J. Combin. Theory Ser. A},
     volume = {194},
     year = {2023},
     bibtex_show = {true},
     arxiv = {2109.05392},
     html = {https://doi.org/10.1016/j.jcta.2022.105707},
     doi = {10.1016/j.jcta.2022.105707},
     dimensions = {true}
   }

2022

1. Some Erdos-Ko-Rado results for linear and affine groups of degree two

   Meagher, Karen, and Razafimahatratra, A. Sarobidy

   The Art of Discrete and Applied Mathematics 2022

   Bib URL PDF

   @article{Meagher-GL,
     author = {Meagher, Karen and Razafimahatratra, A. Sarobidy},
     title = {Some {E}rdos-{K}o-{R}ado results for linear and affine groups of degree two},
     journal = {The Art of Discrete and Applied Mathematics},
     fjournal = {The Art of Discrete and Applied Mathematics},
     volume = {},
     year = {2022},
     html = {https://doi.org/10.26493/2590-9770.1494.1e4},
     bibtex_show = {true},
     pdf = {ADAM.pdf}
   }

2021

1. The Erdős-Ko-Rado theorem for 2-pointwise and 2-setwise intersecting permutations

   Meagher, Karen, and Razafimahatratra, A. Sarobidy

   Electron. J. Combin. 2021

   Bib URL

   @article{MR4328908,
     author = {Meagher, Karen and Razafimahatratra, A. Sarobidy},
     title = {The {E}rd\H{o}s-{K}o-{R}ado theorem for 2-pointwise and 2-setwise
                   intersecting permutations},
     journal = {Electron. J. Combin.},
     fjournal = {Electronic Journal of Combinatorics},
     volume = {28},
     year = {2021},
     number = {4},
     pages = {Paper No. 4.10, 21},
     mrclass = {05D10 (05A05)},
     mrnumber = {4328908},
     doi = {10.37236/9556},
     html = {https://doi.org/10.37236/9556},
     bibtex_show = {true}
   }

2. Weakly Hadamard diagonalizable graphs

   Adm, Mohammad, Almuhtaseb, Khawla, Fallat, Shaun, Meagher, Karen, Nasserasr, Shahla, Shirazi, Mahsa N., and Razafimahatratra, A. S.

   Linear Algebra Appl. 2021

   Bib URL PDF

   @article{MR4159285,
     author = {Adm, Mohammad and Almuhtaseb, Khawla and Fallat, Shaun and Meagher, Karen and Nasserasr, Shahla and Shirazi, Mahsa N. and Razafimahatratra, A. S.},
     title = {Weakly {H}adamard diagonalizable graphs},
     journal = {Linear Algebra Appl.},
     fjournal = {Linear Algebra and its Applications},
     volume = {610},
     year = {2021},
     pages = {86--119},
     issn = {0024-3795},
     mrclass = {05C50 (15A18 15B34)},
     mrnumber = {4159285},
     mrreviewer = {Shunyi Liu},
     doi = {10.1016/j.laa.2020.09.038},
     html = {https://doi.org/10.1016/j.laa.2020.09.038},
     bibtex_show = {true},
     pdf = {Weakly Hadamard diagonalizable graphs.pdf}
   }

3. 3-setwise intersecting families of the symmetric group

   Behajaina, Angelot, Maleki, Roghayeh, Rasoamanana, Aina Toky, and Razafimahatratra, A. Sarobidy

   Discrete Math. 2021

   arXiv Bib URL

   @article{MR4262022,
     author = {Behajaina, Angelot and Maleki, Roghayeh and Rasoamanana, Aina Toky and Razafimahatratra, A. Sarobidy},
     title = {3-setwise intersecting families of the symmetric group},
     journal = {Discrete Math.},
     fjournal = {Discrete Mathematics},
     volume = {344},
     year = {2021},
     number = {8},
     pages = {Paper No. 112467, 15},
     issn = {0012-365X},
     mrclass = {05D05 (20B30)},
     mrnumber = {4262022},
     mrreviewer = {Elad Aigner-Horev},
     doi = {10.1016/j.disc.2021.112467},
     html = {https://doi.org/10.1016/j.disc.2021.112467},
     bibtex_show = {true},
     arxiv = {2010.00229}
   }

4. On triangles in derangement graphs

   Meagher, Karen, Razafimahatratra, Andriaherimanana Sarobidy, and Spiga, Pablo

   J. Combin. Theory Ser. A 2021

   arXiv Bib URL

   @article{MR4195884,
     author = {Meagher, Karen and Razafimahatratra, Andriaherimanana Sarobidy and Spiga, Pablo},
     title = {On triangles in derangement graphs},
     journal = {J. Combin. Theory Ser. A},
     fjournal = {Journal of Combinatorial Theory. Series A},
     volume = {180},
     year = {2021},
     pages = {Paper No. 105390, 26},
     issn = {0097-3165},
     mrclass = {05C25 (05C69 05D10)},
     mrnumber = {4195884},
     mrreviewer = {Norihide Tokushige},
     doi = {10.1016/j.jcta.2020.105390},
     html = {https://doi.org/10.1016/j.jcta.2020.105390},
     selected = {true},
     bibtex_show = {true},
     arxiv = {2009.01086}
   }

5. On non-normal subgroup perfect codes

   Behajaina, , Maleki, Roghayeh, and Razafimahatratra, Andriaherimanana Sarobidy

   Australas. J. Combin. 2021

   arXiv Bib URL

   @article{MR4333853,
     author = {Behajaina and Maleki, Roghayeh and Razafimahatratra, Andriaherimanana Sarobidy},
     title = {On non-normal subgroup perfect codes},
     journal = {Australas. J. Combin.},
     fjournal = {The Australasian Journal of Combinatorics},
     volume = {81},
     year = {2021},
     pages = {474--479},
     issn = {1034-4942},
     mrclass = {05C69},
     mrnumber = {4333853},
     mrreviewer = {T. Tamizh Chelvam},
     selected = {true},
     html = {https://ajc.maths.uq.edu.au/pdf/81/ajc_v81_p474.pdf},
     bibtex_show = {true},
     arxiv = {2109.06993}
   }

6. On complete multipartite derangement graphs

   Razafimahatratra, Andriaherimanana Sarobidy

   Ars Math. Contemp. 2021

   arXiv Bib URL

   @article{MR4341193,
     author = {Razafimahatratra, Andriaherimanana Sarobidy},
     title = {On complete multipartite derangement graphs},
     journal = {Ars Math. Contemp.},
     fjournal = {Ars Mathematica Contemporanea},
     volume = {21},
     year = {2021},
     number = {1},
     pages = {Paper No. 7, 15},
     issn = {1855-3966},
     mrclass = {05D05 (05C35 05C69 20B05)},
     mrnumber = {4341193},
     doi = {10.26493/1855-3974.2554.856},
     html = {https://doi.org/10.26493/1855-3974.2554.856},
     selected = {true},
     bibtex_show = {true},
     arxiv = {2102.05250}
   }

2020

1. Zero-one laws for k-variable first-order logic of sparse random graphs

   Razafimahatratra, A. S., and Zhukovskii, M.

   Discrete Appl. Math. 2020

   arXiv Bib URL

   @article{MR4075521,
     author = {Razafimahatratra, A. S. and Zhukovskii, M.},
     title = {Zero-one laws for {$k$}-variable first-order logic of sparse
                   random graphs},
     journal = {Discrete Appl. Math.},
     fjournal = {Discrete Applied Mathematics. The Journal of Combinatorial
                   Algorithms, Informatics and Computational Sciences},
     volume = {276},
     year = {2020},
     pages = {121--128},
     issn = {0166-218X},
     mrclass = {05C80 (03C13)},
     mrnumber = {4075521},
     mrreviewer = {Vera Koponen},
     doi = {10.1016/j.dam.2019.02.032},
     html = {https://doi.org/10.1016/j.dam.2019.02.032},
     bibtex_show = {true},
     arxiv = {1811.07026}
   }