Some Experiments with Hybrids

Some Experiments with Undeenedness

We distinguish two kinds of undeenedness: undeenedness in existence versus undeenedness in information. We give several applications of the rst kind: a rst order formulation of the untyped lambda calculus and a Zermelo-Fraenkel style theory for partial functions which is equally powerful as ZF-Set Theory. We add the rst kind of unde-nedness to a typed lambda calculus, and show that identifying ...

Salmonellosis in mice: immunization experiments with salmonella-escherichia coli hybrids.

Mice vaccinated with Escherichia coli hybrids experesing Salmonella O antigens were protected against lethal challenge doses of Salmonella strains. Counts of challenge bacteria in mouse organs revealed that a live hybrid vaccine was slightly more efficient than an acetone-killed vaccine.

Some putative Mandarin Duck hybrids

Experiments on Plant Hybrids by Gregor Mendel

Here, translated into English, GENETICS republishes the original Mendel article. As discussed in the Perspectives by Daniel J. Fairbanks and Scott Abbott this translation differs from others in an attempt to be both more accurate than previous translations and also more accessible. GENETICS wishes to thank Scott Abbott and Daniel J. Fairbanks for their labors in presenting the scientific commun...

Some Experiments with Evaluation of Legendre Polynomials

Common practice is to recommend evaluation of polynomials by Horner’s rule. Here’s an example where it is fast but doesn’t work nearly as accurately as another fairly easy method. Can a method for Legendre polynomials be both fast and accurate? 1 1 Legendre Polynomials A substantial literature has grown up around the uses for orthonormal polynomials. Here we look at the example of Legendre poly...