Jørgen Pedersen Gram
Jørgen Pedersen Gram (27 June 1850 – 29 April 1916) was a Danish actuary and mathematician who was born in Nustrup, Duchy of Schleswig, Denmark and died in Copenhagen, Denmark.
Important papers of his include On series expansions determined by the methods of least squares, and Investigations of the number of primes less than a given number. The mathematical method that bears his name, the Gram–Schmidt process, was first published in the former paper, in 1883.Gram's theorem and the Gramian matrix are also named after him.
For number theorists his main fame is the series for the Riemann zeta function (the leading function in Riemann's exact prime-counting function). Instead of using a series of logarithmic integrals, Gram's function uses logarithm powers and the zeta function of positive integers. It has recently been supplanted by a formula of Ramanujan that uses the Bernoulli numbers directly instead of the zeta function.
Gram was the first mathematician to provide a systematic theory of the development of skew frequency curves, showing that the normal symmetric Gaussian error curve was but one special case of a more general class of frequency curves.
Jørgen Pedersen
Jørgen Pedersen (1914–1978) was an Epidemiologist. He is known for his hypothesis concerning the correlation of hyperglycemia during pregnancy and disease in later life.
Life and work
In 1952 he formulated the hypothesis that hyperglycemia in pregnant women might lead to hyperglycemia in their fetuses, causing complications in infancy and later life.
Hyperglycemia in pregnancy is associated with unfavorable fetal and neonatal outcomes, since an increased maternal blood sugar value correlated with increased fetal insulin levels and is involved so directly to the development of diabetic foetopathy.
To consume sugar, soft drinks and sugary-sweetened foods is significantly positively correlated with a risk of an pathologically increased amount of glucose in the blood and diabetes.
References
External links
Media related to Jørgen Pedersen at Wikimedia Commons
Jørgen V. Pedersen
Jørgen V. Pedersen (born 8 October 1959 in Copenhagen, Hovedstaden) is a retired Danish road bicycle racer, and as of 2007 sports director at Team CSC.
He participated in Tour de France in 1985, 1986, and 1987 for the Carrera Jeans–Vagabond team. In 1988 he rode the tour for BH. In 1985 he won the 10th stage. In 1986 he rode, as the second Dane, five days in the yellow jersey. In 1986 he was second overall in the stage race Danmark Rundt.
He also competed at the 1980 Summer Olympics and the 1984 Summer Olympics.
Palmarès
References
External links
Podcasts:
