1.Matmatik analiz

2. Differensial tenglamalar

3.Hisob (Colculus)

4. Optimal boshqaruv nazariyasi

Qo‘shaqov Xolmurodjon Shermamatovich tomonidan 30 dan ortiq ilmiy-uslubiy ishlar e’lon qilingan, shundan, 6 ta ta xorijiy ilmiy jurnallardagi,  ta OAK ro‘yxatiga kiritilgan jurnallardagi ilmiy maqolalar, 10 dan ortiq xorijiy davlatlarda o‘tkazilgan xalqaro ilmiy konferensiyalardagi xalqaro ilmiy-amaliy anjumanlarda va respublika miqyosida o‘tkazilgan ilmiy-amaliy anjumanlarda ma’ruza va tezislari bilan qatnashgan.


 

1. Ibragimov G., Qo‘shaqov X., Muxammadjonov A. Optimal Pursuit Differential Game Problem for an Infinite System of Binary Differential Equations. Lobachevskii Journal of Mathematics, 2024, Vol. 45, No. 3, pp. 1131–1144. c  Pleiades Publishing, Ltd., 2024. (Scopus Q2)
2. Ibragimov G., Qo‘shaqov X.,  Muxammadjonov A., Pansera B.A.Guaranteed Pursuit and Evasion Times in a Differential Game for an Infinite System in Hilbert Space  . Mathematics 2023, 11, 2662. https:// doi.org/10.3390/

math11122662. (Scopus Q1)

3. Ibragimov G., Qo‘shaqov X.,  Turgunov I., Alias I. A.The solution of an infinite system of ternary differential equations.Mathematical Modeling and Computing, Vol. 9, No. 4, pp. 833–841 (2022)

(Scopus Q3).

4. Ibragimov G., Qo‘shaqov X. Infinite system of 2-systems of differential equations in Hilbert space  . Uzbek Mathematical Journal 2022, Volume 66, Issue 1, pp.98-106 DOI: 10.29229/uzmj.

2022-1-9.

5. Qo‘shaqov X., Existence and uniqueness theorem for an infinite system of ternary differential equations. Uzbek Mathematical Journal 2022, Volume 66, Issue 4, pp.131-139 DOI: 10.29229

/uzmj.2022-4-15.
6. Ibragimov G., Qo‘shaqov X., Muxammadjonov A.. A guaranteed evasion time in differential game for an infinite system in Hilbert space  . Uzbek Mathematical Journal, 2023, Volume 67, Issue 1, pp.41-46, DOI: 10.29229

/uzmj.2023-1-5.