Two Unknown Letters of Ivan Sirkо

A tale of two letters.

We recently co-published an editorial stating that we and our sister journals would not publish tobacco-funded research. There have been a number of responses. 3 Richard Smith challenged us to explain why the same ban was not applied to Pharma-funded studies, given the degree of turpitude frequently clinging to that industry. The answer is that, whereas at least some of the actions of big Pharm...

Two Ross-Manson Letters

The full story of Sir Ronald Ross' ever memorable discovery with regard to the transmission of malaria is ?old in his Memoirs, a book which every research worker in medicine should read. The Memoirs. however, are now being supplemented by publication of (he original letters and documents concerned, by the Ross Institute. As only one of the above four publications is marked with a price, we take...

Autobiography of IVAN GUTMAN

Ivan Dikic

most extensively analysed fungal sequences. As there are now barcode sequences covering all kingdoms of multicellular life, and taxonomists in museums are working hard to keep the molecular information connected to the traditional repositories and species definitions, barcodes offer the opportunity to expand species identification to situations where skilled taxonomists may not be at hand. “As ...

On two letters versus three

If A is a context-free language over a two-letter alphabet, then the set of all words obtained by sorting words in A and the set of all permutations of words in A are context-free. This is false over alphabets of three or more letters. Thus these problems illustrate a difference in behavior between twoand three-letter alphabets. The following problem appeared on a recent exam at Cornell: Let be...