Định lý Weierstrass cho hàm có giá trị khoảng

Nguyễn Chí Tâm , Trần Văn Duy , Huỳnh Thanh Du , Nguyễn Trung Phát và Đinh Ngọc Quý *

* Tác giả liên hệ (dnquy@ctu.edu.vn)

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Ngày nhận bài: 13-04-2023
Ngày nhận bài sửa: 05-05-2023
Ngày duyệt đăng: 12-05-2023
Ngày xuất bản: 18-10-2023
Title: Weierstrass theorem for interval-valued functions
DOI: 10.22144/ctujos.2023.188
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Trích dẫn
Tâm, N. C., Duy, T. V., Du, H. T., Phát, N. T., & Quý, Đ. N. (2023). Định lý Weierstrass cho hàm có giá trị khoảng. Tạp chí Khoa học Đại học cần Thơ, 59(5), 55-63. https://doi.org/10.22144/ctujos.2023.188
Số báo
Tập. 59 Số. 5 (2023)
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Abstract

In this paper, some extended versions of the classical Weierstrass extreme-value theorem for interval-valued functions was shown. The results are new and general to the classical Weierstrass theorem. Many examples are presented to compare and illustrate the obtained results.

Keywords: Weierstrass theorem, semicontinuity, interval-valued functions

Tóm tắt

Trong bài báo này, các phiên bản mở rộng của định lý Weierstrass cổ điển cho hàm có giá trị khoảng được đưa ra. Các kết quả được đề xuất là mới và tổng quát cho định lý Weierstrass cổ điển. Nhiều ví dụ cụ thể được trình bày để so sánh và minh họa cho các kết quả thu được.

Từ khóa: Định lý Weierstrass, tính nửa liên tục, hàm có giá trị khoảng

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