• Proceedings of the Korean Magnestics Society Conference
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• 2007.05a
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• pp.133.1-133.1
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• 2007

• Bulletin of the Korean Mathematical Society
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• v.20 no.2
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• pp.87-93
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• 1983

Let X and Y be normed linear spaces. An operator T defined on X with the range in Y is continuous in the sense that if a sequence {x$_{n}$} in X converges to x for the weak topology .sigma.(X.X') then {Tx$_{n}$} converges to Tx for the norm topology in Y. We shall denote the class of such operators by WC(X, Y). For example, if T is a compact operator then T.mem.WC(X, Y). In this note we discuss relationships between WC(X, Y) and the class of weakly of bounded linear operators B(X, Y). In the last section, we will consider some characters for an operator in WC(X, Y).).

• Proceedings of the Korean Society of Veterinary Clinics Conference
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• 2008.05a
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• pp.84-84
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• 2008

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2006.10a
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• pp.18-19
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• 2006

• Proceedings of the Korean Society of Crop Science Conference
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• 1991.10a
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• pp.46-47
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• 1991

• Proceedings of the Korean Society of Crop Science Conference
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• 1988.02a
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• pp.78-79
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• 1988

• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
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• pp.143.2-143
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• 1998

• Proceedings of the Materials Research Society of Korea Conference
• /
• 1998.08a
• /
• pp.141.1-141
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• 1998

• The Pure and Applied Mathematics
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• v.10 no.3
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• pp.193-198
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• 2003

Let X and Y be n-dimensional Euclidean spaces with $n\;{\geq}\;3$. In this paper, we generalize a classical theorem of Bookman and Quarles by proving that if a mapping, from a half space of X into Y, preserves a distance $\rho$, then the restriction of f to a subset of the half space is an isometry.

• Bulletin of the Korean Chemical Society
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• v.19 no.1
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• pp.74-78
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• 1998

Synthesis of novel 9-fluoroanthracyclines carrying L-fucose as a sugar component is described. Compound 3 containing a fluorine at the C-9 position was synthesized from an epoxide 2 and HF/Pyr (7 : 3). Bromination and hydrolysis of compound 3 resulted in synthesis of an aglycone, 9-fluoroanthracyclinone 6. The α-(1b) and β -anomers (1a) of the final product were obtained in high yields by a coupling reaction with the L-fucose.