منابع مشابه
John L. Hall - Nobel Lecture
Four long-running currents in laser technology met and merged in 1999– 2000. Two of these were the quest toward a stable repetitive sequence of ever-shorter optical pulses and, on the other hand, the quest for the most time-stable, unvarying optical frequency possible. The marriage of UltraFastand UltraStable lasers was brokered mainly by two international teams and became exciting when a speci...
متن کاملAn Extended Loomis–whitney Inequality for Positive Double John Bases
In this paper, we establish an extended Loomis–Whitney inequality for positive double John bases, which generalises Ball’s result [1]. Moreover, a different extension of the Loomis–Whitney inequality is deduced. 2010 Mathematics Subject Classification. 52A20, 52A21, 52A40.
متن کاملMetallurgical Factors Influencing the Machinability of Inconel 718 John J. Schirra, Pratt & Whitney
Because of the large volume of Inconel 718 used by the aerospace and power generation industries and the high percentage of metal removed to machine complex component geometries; understanding and improving the machining characteristics of Inconel 718 would result in substantial cost savings. While progress has been made in developing improved tool materials and machining processes, a detailed ...
متن کاملTranslated Whitney and r-Whitney Numbers: A Combinatorial Approach
Using a combinatorial approach, we introduce the translated Whitney numbers. This seems to be more natural than to write a product of anarithmetical progression in terms of a power variable and conversely. We also extend our ideas to translated r-Whitney numbers of both kinds and to translated Whitney-Lah numbers.
متن کاملWhitney Elements on Pyramids
V. GRADINARU AND R. HIPTMAIR † Abstract. Conforming finite elements inH(div; Ω) andH(curl; Ω) can be regarded as discrete differential forms (Whitney–forms). The construction of such forms is based on an interpolation idea, which boils down to a simple extension of the differential form to the interior of elements. This flexible approach can accommodate elements of more complicated shapes than ...
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ژورنال
عنوان ژورنال: The Journal of Asian Studies
سال: 1998
ISSN: 0021-9118,1752-0401
DOI: 10.1017/s0021911800023561