Nabla operator | Article about Nabla operator by The Free Dictionary
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DelAn internal DOS/Windows command that erases a file from the disk. When a file is deleted from the command line, it cannot be retrieved from the recycle bin, so "be careful!" However, files deleted from Windows Explorer are saved in the recycle bin. Del and Erase are two forms of the command. See Delete key.
Following are examples of deleting single and multiple files:
del old.txt erase OLD.TXT
del *.txt erase all TXT files
erase old.txt erase OLD.TXT
erase *.txt erase all TXT files
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
On drawings, abbr. for “delineation.”
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive
The fundamental ingredient of the theory is the nabla operator
[nabla] acting on [LAMBDA].
where is the velocity vector, is the constant density of fluid, is the material time derivative, is the nabla operator
, p the pressure, is the dynamic viscosity of the fluid and is the Laplacian operator.
where [nabla] is the nabla operator
; H is the magnetic field strength vector; J is the current density vector; D represents the electric flux density vector; E represents the electric field density vector: a is the electrical conductivity.
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