• Probability.

• Stochastic process.

• Lévy process.

• Penalization problem.

• Conditioning problem.

---------------Preprints--------------------

1. [arXiv] K.Iba.  Hitting Probabilities of Finite Points for One-Dimensional Lévy Processes.

2. [arXiv] K. Iba. Multi-point local time penalizations with various clocks for one-dimensional Lévy processes.

3. [arXiv] K. Iba. Conditioning to avoid bounded sets for a one-dimensional Lévy processes.

---------------Preprints--------------------

---------------Papers (refereed)--------------------

1. K. Iba and K. Yano. Two-point local time penalizations with various clocks for Lévy processes.
   ALEA, Lat. Am. J. Probab. Math. Stat. 22, 183--207, 2025.

---------------Papers (refereed)--------------------

---------------Papers (non-refereed)--------------------

1. K. Iba and K. Yano. Conditionings to avoid points with various clocks for Lévy processes.
   無限分解可能過程に関連する諸問題(29), 統計数理研究所共同研究リポート479, 9--26, 2025. 

2. K. Iba and K. Yano. Penalization by two point local times with various clocks.  
   無限分解可能過程に関連する諸問題(28),  統計数理研究所共同研究リポート472,  89-93,  2024.

---------------Papers (non-refereed)--------------------

Only talks given at international conferences are listed. 

-----------------2026----------------------

1. [Slide] Kohki Iba. Hitting Probabilities of Finite Points for One-Dimensional Lévy Processes.
   Non-commutative Probability, Random Matrices and Levy processes 2026. 2026/03/16-2026/03/18. (at Osaka univ.).

[ 3 other talks at conferences in Japan. ]

-----------------2026----------------------

-----------------2025----------------------

1. [Poster]  Kohki Iba, Penalization and Conditioning for Lévy Processes.
   Symposium of Probability and Stochastic Processes  XV.  2025/11/10-2025/11/14. (at universidad de Sonora).

2. [Poster]  Kohki Iba, Penalization and Conditioning for Lévy Processes.
   French-Japanese Conference  on Probability and Interactions. 2025/09/01-2025/09/05. (at Waseda univ.).

3. Kohki Iba, Conditioning to avoid bounded sets for a one-dimensional Lévy processes.
   Non-commutative probability, random matrices and Lévy processes 2024. 2025/03/25-2025/03/28. (at ISM.).

4. Kohki Iba, Conditioning to avoid bounded sets for a one-dimensional Lévy processes.
   19th Mexico-Japan Probability Seminar. 2025/02/11-2025/02/12. (at CIMAT, Mexico).

[ 9 other talks at conferences in Japan. ]

-----------------2025----------------------

-----------------2024----------------------

[ 7 other talks at conferences in Japan. ]

-----------------2024-----------------------

-----------------2023----------------------

1. [Poster] Kohki Iba and Kouji Yano, Penalization by two point local times with various clocks.
   XIV Simposio de Probabilidad y Procesos Estocasticos. 2023/11/20-2023/11/24. (at CIMAT, Mexico).

[ 3 other talks at conferences in Japan. ]

-----------------2023----------------------

• Doctor (Science). Department of Mathematics, Graduate School of Science, Osaka University. (2024/04/01-).

• Master (Science). Department of Mathematics and Mathematical Analysis, Graduate School of Science, Kyoto University. (2022/04/01-2024/03/31).

• Bachelor (Science). Department of Mathematics, School of Education, Waseda University. (2018/04/01-2022/03/31).

• TF, Osaka univ. (2025/04-).

•  What is ...? seminar organizer. (2025/04-).

• TA, Osaka univ. (2024/04-).

• JST SPRING Project student. (2024/04-).

• TA, Kyoto univ. (2022/04-2024/01 ).