### Mathematical

- "An Overview of (some) Mathematical Problems in Robotics", 08.06.2018, Oberseminar Reelle Geometrie und Algebra, Universität Konstanz, Konstanz, Germany
- "Generalizing concepts in field theory to rings", 03.11.2016 and 10.11.2016, Computer Algebra Seminar, Research Institute for Symbolic Computation, Hagenberg, Austria.
- "Generalizing Some Results in Field Theory for Rings", 19.10.2016, Second International Workshop and Conference in Commutative Algebra, Tribhuvan University, Kathmandu, Nepal.
- "Sufficiency sets for the Collatz conjecture" 09.06.2016, LARD Seminar, Research Institute for Symbolic Computation, Hagenberg, Austria.
- "A short result on the Collatz conjecture", 20.01.2016, University of the Philippines, Diliman, Quezon City, Philippines.
- "A mathematical motivation for industrial robotic motion planning", 23.05.2014, Doctoral Program, Computational Mathematics- Numerical Analysis and Symbolic Computation, Johannes Kepler University, Linz, Austria.
(Slides,
Paper
).
- "A motivational talk in real algebraic geometry", 07.12.2009, University of the Philippines, Diliman, Quezon City, Philippines
- "Real closed rings and real closed * rings", 06.2006, DFG Seminar, University of Regensburg, Regensburg, Germany.
- "Crash Course in Category Theory", 06.2006, DFG Seminar, University of Regensburg, Regensburg, Germany.
- "Real closed * rings", 05.2006, DFG Seminar, University of Passau, Passau, Germany
- "Real Sheaf Structures of Partially Ordered Rings", 12.04.2006,
DFG-Seminar Reelle Algebraische Geometrie
University of Passau, Passau, Germany.
- "Weil Pairings of Elliptic Curves", 09.12.2004,
DFG-Seminar Reelle Algebraische Geometrie
University of Passau, Passau, Germany.
- "Weil Pairings of Elliptic Curves", 01.24.2004,
Oberseminar Komplex Analysis,
Ludwig Maximillian University, Munich, Germany.

### Non-mathematical

- "RRT Planner for the Binpicking Problem"
(pdf,
ppt),
International Workshop on Robot Motion and Control (RoMoCo) 2013, Wasowo Palace, Poland. Presented: 04.07.2013.
- "The Determination of Optimum CeO
_{2} Loading on Al_{2}O_{3
} for CO Oxidation and the Reactivity of C_{3}H_{6} to the Optimum Loading",
03.1998, Chemical Engineering Presentations, De La Salle University, Manila, Philippines.