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- Patrick Muldowney, Krzysztof Ostaszewski, and Wojciech Wojdowski, “The Darth Vader Rule,” Tatra Mountains Mathematical Publications, Volume 52, Issue 1, November 2012, pp. 53-63.
- Roger Eggleton and Krzysztof Ostaszewski, “The 6666 Problem,” The Mathematical Gazette, Volume 96, Number 535, March 2012, pp. 39-48.
- Zoltan Buczolich and Krzysztof Ostaszewski, “The Hausdorff dimension of graphs of density continuous functions II“, Proceedings of the American Mathematical Society 123(6) (1995), pp. 1821-1825.
- Krzysztof Ciesielski, Lee Larson, and Krzysztof Ostaszewski, I-Density Continuous Functions, Memoirs of the American Mathematical Society, No. 515, Providence, Rhode Island, 1994.
- Krzysztof Ostaszewski, “Division space axiomatics”, Acta Mathematica et Informatica Universitatis Ostraviensis 1(1993), pp. 47-58.
- Krzysztof Ciesielski, Lee Larson, and Krzysztof Ostaszewski, “Semigroups of I-density continuous functions”, Semigroup Forum 45(1992), pp. 191-204.
- Waldemar Karwowski, Krzysztof Ostaszewski, and Jozef Zurada, “Potential applications of catastrophe theory in modeling the risk of low back injury in manual lifting task”, Le Travail Humain, 55(3)(1992), pp. 259-275.
- Patricia Cerrito, Waldemar Karwowski, and Krzysztof Ostaszewski, “Empirical study of the meaning of the hedge VERY“, in: Advances in Computing and Information, Springer Lecture Notes in Computer Science No. 497, Springer-Verlag, 1991, pp. 672-674.
- Zoltan Buczolich and Krzysztof Ostaszewski, “The Hausdorff dimension of graphs of density continuous functions“, Proceedings of the American Mathematical Society 112(1991), pp. 1037-1043.
- Waldemar Karwowski, P. Hancock, Krzysztof Ostaszewski, and Jozef Zurada, “Risk of low back overextension injury due to manual lifting in view of the catastrophe theory”, Proceedings of the Eleventh IEA Congress, Paris, France, 1991.
- Zoltan Buczolich and Krzysztof Ostaszewski, “The Hausdorff dimension of graphs of density continuous functions,” abstract presented at the 863rd Meeting of the American Mathematical Society,” San Francisco, California, January 16-19, 1991. Abstract published in the Abstracts of the American Mathematical Society,”, January 1991, Issue 73, Volume 12, Number 1, p. 69.
- Krzysztof Ciesielski, Lee Larson, and Krzysztof Ostaszewski, “Density continuity versus continuity”, Forum Mathematicum, 2(1990), 265-275.
- Krzysztof Ciesielski, Lee Larson, and Krzysztof Ostaszewski, “Differentiability and density continuity”, Real Analysis Exchange, 15(1)(1989-90), 239-247.
- Piotr Mikusinski and Krzysztof Ostaszewski, “The space of Henstock integrable functions II“, in: New Integrals, Lecture Notes in Mathematics, No. 1419, pp. 136-149, Springer-Verlag, 1990.
- Waldemar Karwowski, Tadeusz Marek, Czeslaw Noworol and Krzysztof Ostaszewski, “Fuzzy modeling of risk factors for industrial accident prevention: Some empirical results”, in: Applications of Fuzzy Set Methodologies in Industrial Engineering, Elsevier, Amsterdam, 1989, pp. 141-154.
- Waldemar Karwowski, and Krzysztof Ostaszewski, “Linguistic hedges and fuzzy normalization operator“, Proceedings of the Third Congress of the International Fuzzy Systems Association, Seattle, Washington, 1989, pp. 528-531.
- Krzysztof Ostaszewski, “Semigroups of density-continuous functions”, Real Analysis Exchange, 14(1)(1988-89), pp. 104-114.
- Piotr Mikusinski and Krzysztof Ostaszewski, “Embedding Henstock integrable functions into the space of Schwartz distributions”, Proceedings of the Twelfth Real Analysis Symposium, Real Analysis Exchange, 14(1), 1988-89, 24-29.
- Krzysztof Ostaszewski, “The space of Henstock integrable functions of two variables”, International Journal of Mathematics and Mathematical Sciences 11(1988) 15-22.
- Krzysztof Ostaszewski and James Sochacki, “Gronwall’s inequality and the Henstock integral”, Journal of Mathematical Analysis and Applications, 128(2)(1987), 370-374.
- Krzysztof Ostaszewski, Henstock Integration in the Plane, Memoirs of the American Mathematical Society, No. 353, Providence, Rhode Island, 1986.
- Krzysztof Ostaszewski, “Nonabsolute integration in the plane”, Proceedings of the Ninth Real Analysis Symposium, Real Analysis Exchange, 11(1), 1985-86, pp. 30-38.
- Krzysztof Ostaszewski, “Variational equivalence and generalized absolute continuity”, Real Analysis Exchange, 10(1)(1984-85) 220-229.
- Krzysztof Ostaszewski, “Density topology and the Luzin (N)-condition”, Proceedings of the Seventh Real Analysis Symposium, Real Analysis Exchange, 9(2), 1983-84, pp. 390-393.
- Krzysztof Ostaszewski, “Topology for the spaces of Denjoy-integrable functions”, Proceedings of the Sixth Real Analysis Symposium, Real Analysis Exchange, 9(1), 1983-84.
- Krzysztof Ostaszewski, “Continuity in the density topology II”, Rendiconti del Circolo Matematico di Palermo, (2)32(1983) 398-414.
- Krzysztof Ostaszewski, “Continuity in the density topology”, Real Analysis Exchange, 7(2)(1982) 259-270.
- Krzysztof Ostaszewski, “Two modifications of the approximate derivative”, Demonstratio Mathematicae, 15(3)(1982) 899-911.
All information contained here is, to our best knowledge, correct, but it is merely a representation, and should not be considered to be any form of professional advice. This electronic publication should not be misconstrued as the official position of Illinois State University, or its Department of Mathematics. We are glad to provide as much information as possible here, but we kindly ask that in any decision related to matters listed here you seek additional counsel and information. Comments on this Home Page are welcome and should be sent to Dr. Krzysztof Ostaszewski at his e-mail address: krzysio@ilstu.edu.