presentations

  1. Construction of QC-LDPC Codes with Girth g from the Hermite Normal Form of a Matrix, Mathematical Congress of the Americas 2025, InterContinental Miami, Miami, Florida, July 24, 2025.
  2. Construction of QC-LDPC Codes with Girth g from the Hermite Normal Form of a Matrix, 2025 IEEE International Symposium on Information Theory (ISIT), University of Michigan, Ann Arbor, Michigan, June 26, 2025.
  3. Using Spectral Analysis to Optimize Certain Parameters of QC-LDPC Codes, 2025 AMS Spring Southeastern Sectional Meeting, Clemson University, Clemson, South Carolina, March 8, 2025.
  4. QC-LDPC Codes from Expander Graphs, 2024 AMS Fall Central Sectional Meeting, The University of Texas - San Antonio, San Antonio, Texas, September 15, 2024.
  5. Generalized Quasi-Cyclic LDPC Codes: Design and Efficient Encoding, 2024 IEEE International Symposium on Information Theory (ISIT), Athens, Greece, July 8, 2024.
  6. An algebraic approach to construct QC-LDPC codes with girth g and shortest block-length, 2024 SIAM Spring Eastern Sectional Meeting, Howard University, Washington DC, April 6, 2024.
  7. A Low Complexity PEG-like Algorithm to Construct Quasi-Cyclic LDPC Codes, 2023 12th International Symposium on Topics in Coding (ISTC), Brest, France, September 5, 2023.
  8. Using Partial Orthomorphisms to Construct Short Quasi-Cyclic LDPC Codes with Girth at Least 6, 2023 12th International Symposium on Topics in Coding (ISTC), Brest, France, September 5, 2023.
  9. On the Tanner Cycle Distribution of QC-LDPC Codes from Polynomial Parity-Check Matrices, 2023 IEEE International Symposium on Information Theory (ISIT), Taipei, Taiwan, June 30, 2023.
  10. A Low-Complexity PEG-like Algorithm to Construct Quasi-Cyclic LDPC Codes, SIAM Southeastern Atlantic Section Annual Meeting, Virginia Tech, March 26, 2023.
  11. An Efficient Strategy to Count Cycles in the Tanner Graph of Quasi-Cyclic LDPC Codes, XXXVIII Seminario Interuniversitario de Investigación en Ciencias Matemáticas (SIDIM), University of Puerto Rico, Mayagüez Campus, February 25, 2023.
  12. Counting cycles in the Tanner graph of QC-LDPC codes, Algebraic Geometry and Number Theory Seminar, Rice University, November 8, 2022.
  13. On the Tanner Cycle Distribution of QC-LDPC Codes from Polynomial Parity-Check Matrices, Discrete Seminar, University of Nebraska-Lincoln, October 25, 2022. (virtual)
  14. On the Tanner Cycle Distribution of QC-LDPC Codes from Polynomial Parity-Check Matrices, Postgraduate International Coding Theory Seminar (PICSeminar), October 20, 2022. (virtual)
  15. Using Minors to Construct Generator Matrices for Quasi-Cyclic LDPC Codes, IEEE International Symposium on Information Theory (ISIT), Espoo, Finland, June 27, 2022.
  16. Necessary and Sufficient Girth Conditions for LDPC Tanner Graphs with Denser Protographs, International Symposium on Topics in Coding (ISTC), Montreal, Canada, September 2, 2021 (virtual).
  17. Linear codes, graphs, and the projective special linear group PSL_2(F_q), XXXIV Seminario Interuniversitario de Investigación en Ciencias Matemáticas (SIDIM), University of Puerto Rico at Humacao, March 1, 2019.
  18. Linear Codes from Graphs Generated by the Projective Special Linear Group PSL_2(F_q), University of Puerto Rico, Río Piedras Campus, December 11, 2018.
  19. Cayley Graphs of PSL_2(F_q) and Ramanujancy: Second Part, University of Puerto Rico, Río Piedras Campus. June 13, 2018.
  20. Cayley Graphs of PSL_2(F_q) and Ramanujancy: First Part, University of Puerto Rico, Río Piedras Campus. May 21, 2018.
  21. Notes on Graph Theory and Ramanujan Graphs, University of Puerto Rico, Río Piedras Campus. January 31, 2018.
  22. Notes on Continued Fractions, Graduate Seminar, University of Puerto Rico, Río Piedras Campus, June 20, 2017.
  23. Simulacro del PEAU en Matemáticas, Colectivo Universitario para el Acceso, University of Puerto Rico at Cayey, February 11, 2017.
  24. El apoyo académico del CUA-UPR en Cayey: principios y retos, Segundo Encuentro Estudiantil de Investigación, Creación y Servicio Comunitario, University of Puerto Rico at Cayey, December 7, 2015. (with C. Torres-Rivera, L. Rodríguez-Rivera, J. Sosa-Díaz)
  25. Modelos de cazador-presa: Una nueva estrategia de persecución, Primer Encuentro Estudiantil de Investigación, Creación y Servicio Comunitario, University of Puerto Rico at Cayey, May 15, 2015. (with L. Molina-Rodríguez)