dx

The integral in equation 6 uses dx, which is clearly an area here, because x is a location on a surface.

Rabett Run EliRabett 2009

But we still speak of a small increment or patch of solid angle, just like in the vector case the dx is a small increment of the vector x, in two parts.

Rabett Run EliRabett 2009

What is confusing and perhaps I am simply misinterpreting what Arthur Smith says above, is that he seems to indicate that his dx is a vector: "Perhaps my vector dx notation for a surface element isn't the usual convention"

Rabett Run EliRabett 2009

Seems having a dx is a good thing, even if there is no known treatment or cure.

Krill oil and inflammation | The Blog of Michael R. Eades, M.D. 2007

Certain pairs of letters, such as "dx," don't exist in English, while some letters almost always appear next to a certain other letter, such as "u" after "q".

Two Centuries On, a Cryptologist 2009

One has to be careful in drawing a direct analogy between what Wolfram shows and what Arthur Smith has done, given that Smith's "dx" is a vector, according to Smith's own words above: "Perhaps my vector dx notation for a surface element isn't the usual convention"

Rabett Run EliRabett 2009

That is, for a surface integral you can think of "dx" as two vectors... just like the Wolfram page uses two tangent vectors to represent the patch of surface.

Rabett Run EliRabett 2009

The wording "my vector dx notation" refers to the use of a vector x as the integration variable, and of course the "dx" in integration represents a small increment in the integration variable.

Rabett Run EliRabett 2009

For concreteness, consider a differential equation system, such as dx ‰ „ ‰ dt = Fx for a set of variables x = x1, x2, ¦, xn.

Chaos Bishop, Robert 2008

(Recall that "dx" means, in an informal way, "infinitesimal bit of length".)

Conservapedia - Recent changes [en] 2010

Where does the term "partial-birth" abortion come from? The term was first coined by the National Right to Life Committee (NRLC) in 1995 to describe a recently introduced medical procedure to remove fetuses from the womb. Alternately known as "dilation and extraction," or D&X, and "intact D&E," it involves removing the fetus intact by dilating a pregnant woman's cervix, then pulling the entire body out through the birth canal. After a physician presented a paper at a conference of the National Abortion Federation describing the new procedure, the NRLC commissioned drawings to illustrate it and published them in booklet form, as well as placing them as paid advertisements in newspapers to build public opposition. In an interview with The New Republic magazine in 1996, the NRLC's Douglas Johnson explained that the term was thought up in hopes that "as the public learns what a 'partial-birth abortion' is, they might also learn something about other abortion methods, and that this would foster a growing opposition to abortion." In 1995, Rep. Charles Canady (R-FL) included the term as part of a bill he proposed that would make it a federal crime to perform a "partial-birth" abortion.

Bulky Cameras, Meet The Lens-less FlatCam Julie Rovner 2006