Search Results - "Zak, Nikolay"

Comment on 'Naked mole-rat mortality rates defy Gompertzian laws by not increasing with age' by Dammann, Philip, Scherag, André, Zak, Nikolay, Szafranski, Karol, Holtze, Susanne, Begall, Sabine, Burda, Hynek, Kestler, Hans A, Hildebrandt, Thomas, Platzer, Matthias

“…Ruby et al. recently analyzed historical lifespan data on more than 3200 naked mole-rats, collected over a total observation period of about 38 years (Ruby et…”
Get full text

Evidence That Jeanne Calment Died in 1934-Not 1997 by Zak, Nikolay

“…I present a body of data that, I argue, cumulatively casts serious doubt on the validity of Jeanne Calment's accepted world record of human life span. First, I…”
Get more information

Quasitriviality of the Forms of Segre Varieties by Zak, Nikolay

“…We prove the rationality of a $\k$-form $X$ of the product $S$ of projective spaces provided the existence of a $\k$-point on $X$. The method of the proof is…”
Get full text

On Unirationality of Quartics over non Algebraically Closed Fields by Zak, Nikolay

“…We give examples of smooth $\k$-unirational line-free quartic hypersurfaces over a non algebraically closed field $\k$. Unlike other methods of proving…”
Get full text