• 대한수학회지
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• 제57권5호
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• pp.1299-1322
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• 2020

We consider closed, star-shaped, admissible hypersurfaces in ℝⁿ⁺¹ expanding along the flow Ẋ = |X|^α-1 F^-β, α ≤ 1, β > 0, and prove that for the case α ≤ 1, β > 0, α + β ≤ 2, this evolution exists for all the time and the evolving hypersurfaces converge smoothly to a round sphere after rescaling. Besides, for the case α ≤ 1, α + β > 2, if furthermore the initial closed hypersurface is strictly convex, then the strict convexity is preserved during the evolution process and the flow blows up at finite time.

• East Asian mathematical journal
• /
• 제8권1호
• /
• pp.9-17
• /
• 1992

• East Asian mathematical journal
• /
• 제9권1호
• /
• pp.83-92
• /
• 1993

• Journal of the Korean Society for Industrial and Applied Mathematics
• /
• 제5권2호
• /
• pp.53-61
• /
• 2001

We introduce sums and joins of fuzzy finite state machines and investigate their algebraic structures.

• Journal of applied mathematics & informatics
• /
• 제18권1_2호
• /
• pp.639-647
• /
• 2005

We count the number of maximal independent sets of binary trees and planted plane trees.

• Journal of applied mathematics & informatics
• /
• 제12권1_2호
• /
• pp.375-384
• /
• 2003

We introduce some algorithms for computing Mathematics and also give some questions based on the results from computations using CoCoA and Splus.

• Kyungpook Mathematical Journal
• /
• 제32권3_spc호
• /
• pp.463-475
• /
• 1992

• Kyungpook Mathematical Journal
• /
• 제34권2호
• /
• pp.187-192
• /
• 1994

• Journal of applied mathematics & informatics
• /
• 제10권1_2호
• /
• pp.297-308
• /
• 2002

• Journal of applied mathematics & informatics
• /
• 제10권1_2호
• /
• pp.325-332
• /
• 2002