Letter | Published:

Higher Algebra

Nature volume 150, page 124 (25 July 1942) | Download Citation

Subjects

Abstract

MY attention has been directed to an unfortunate error in my review of “The Tutorial Algebra” in NATURE of July 11, p. 39. In fairness to the author especially, I should like to correct this. My query, “Is the condition ⦠biquadratic?”, should havereferred to the converse, namely, Does the condition acb2>0 hold for every biquadratic having at least two complex roots? My chief concern was to prevent the inference that the roots are all real when acb2 is not positive ; hence the example. I think the whole point would become quite clear if a brief note were added at the end of the proof of example (2) on p. 510 indicating (i) what happens when H is not positive or equal to zero, and (ii) whether the converse to the theorem proved is true, H being acb2.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

About this article

Publication history

Published

DOI

https://doi.org/10.1038/150124c0

Authors

  1. Search for F. G. W. BROWN in:

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.