Differential Quotes - page 3
Appropriate patterns of reproductive, gender, and sexual conduct are all products of specific cultures and all can be viewed as examples of socially scripted conduct. Western societies now have a system of gender and sexual learning in which gender differential scripts are learned prior to sexual scripts, but take their origins in part from the previously learned gender scripts... There are two important points: The first is that both gender and sexuality are learned forms of social practice, and the second is that looking to "natural differences" between women and men for lessons about sexual conduct is an error.
John Gagnon
I have throughout introduced the Integral Calculus in connexion with the Differential Calculus. ...Is it always proper to learn every branch of a direct subject before anything connected with the inverse relation is considered? If so why are not multiplication and involution in arithmetic made to follow addition and precede subtraction?
Augustus De Morgan
The differential equation of the first order
\frac {dy}{dx} = f(x, y)
... prescribes the slope \frac {dy}{dx} at each point of the plane (or at each point of a certain region of the plane we call the field").... a differential equation of the first order... can be conceived intuitively as a problem about the steady flow of a river: Being given the direction of the flow at each point, find the streamlines.... It leaves open the choice between the two possible directions in the line of a given slope. Thus... we should say specifically "direction of an unoriented straight line" and not merely "direction."
George Pólya
The whole secret of raising a fart in class is to make it sound as if it is punctuating, or commenting upon, what the teacher is saying. Timing, not ripeness, is all. 'And since x tends to y as c tends to d,' Fred expounded, 'then the differential of the increment of x squared must be... must be... come on, come on! What must it flaming be?' Here was the chance to to give my version of what it must be. I armed one, opened the bomb bay, and let it go. Unfortunately, the results far exceeded the discreet limits I had intended. It sounded like a moose coughing.
Clive James
The minimum principle that unified the knowledge of light, gravitation, and electricity of Hamilton's time no longer suffices to relate these fundamental branches of physics. Within fifty years of its creation, the belief that Hamilton's principle would outlive all other physical laws of physics was shattered. Minimum principles have since been created for separate branches of physics... but these are not only restricted... but seem to be contrived...
A single minimum principle, a universal law governing all processes in nature, is still the direction in which the search for simplicity is headed, with the price of simplicity now raised from a mastery of differential equations to a mastery of the calculus of variations.
William Rowan Hamilton
So, every decade the Muslim percentage in the Subcontinent increases by more than 1%, with the rate of increase itself increasing. In India, the rate of increase in the Muslim percentage is considerable, though lower than the subcontinental total, but is rising faster due to the differential in the use of birth control and the increasing Muslim immigration. In Hindutva circles, this remarkable demographic differential is interpreted as the result of Muslim "demographic aggression".
Koenraad Elst
Even if without the Scott's proverbial thrift, the difficulty of solving differential equations is an incentive to using them parsimoniously. Happily here is a commodity of which a little may be made to go a long way. ...the equation of small oscillations of a pendulum also holds for other vibrational phenomena. In investigating swinging pendulums we were, albeit unwittingly, also investigating vibrating tuning forks.
George Pólya