Toward a solution to the high Weissenberg number problem

Mixed Solution to the Number Problem

You must either save a group of m people or a group of n people. If there are no morally relevant diff erences among the people, which group should you save? Th is problem is known as the number problem. Th e recent discussion has focussed on three proposals: (i) Save the greatest number of people, (ii) Toss a fair coin, or (iii) Set up a weighted lottery, in which the probability of saving m p...

A Pragmatic Solution to the Value Problem of Knowledge

We value possessing knowledge more than true belief. Both someone with knowledge and someone with a true belief possess the correct answer to a question. Why is knowledge more valuable than true belief if both contain the correct answer? I examine the philosophy of American pragmatist John Dewey and then I offer a novel solution to this question often called the value problem of knowledge. I pr...

Color realism: toward a solution to the "hard problem".

Ross (this issue) has made a useful contribution to the case for color realism (or ‘‘physicalism’’ as he prefers). It is a difficult case to make, and it would be premature to claim that Ross, or anyone, has yet solved all the difficulties of the position or made a case strong enough to convince a skeptic. As with any academic work, a diligent reader could surely find weaknesses in the argument...

Toward a GA Solution to the Discovery Problem

A particle-number-conserving solution to the generalized pairing problem

An exact, number-conserving solution to the generalized, orbit-dependent pairing problem is derived by introducing an infinite-dimensional algebra. A method for obtaining eigenvalues and eigenvectors of the corresponding Hamiltonian is also given. The relevance of the orbit-dependent pairing solution is demonstrated by comparing predictions of the model with shell-model calculations. q 1998 Els...