Adriaan Vlacq was a Dutch

Netherlands

The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...

 book publisher and author of mathematical tables. Born in Gouda

Gouda

Gouda is a city and municipality in the western Netherlands, in the province of South Holland. Gouda, which was granted city rights in 1272, is famous for its Gouda cheese, smoking pipes, and 15th-century city hall....

, Vlacq published a table of logarithms from 1 to 100,000 to 10 decimal places in 1628 in his Arithmetica logarithmica. This table extended Henry Briggs'

Henry Briggs (mathematician)

Henry Briggs was an English mathematician notable for changing the original logarithms invented by John Napier into common logarithms, which are sometimes known as Briggsian logarithms in his honour....

 original tables which only covered the values 1-20,000 and 90,001 to 100,000. The new table was computed by Ezechiel de Decker

Ezechiel de Decker

-Tables of logarithms:In 1625, De Decker entered a contract with Adriaan Vlacq for the publication ofseveral translations of books by John Napier, Edmund Gunter and Henry Briggs. A first book was published in 1626, with several translations...

 and Vlacq who calculated and added 70,000 further values to complete the tables. This table was further extended by Jurij Vega

Jurij Vega

Baron Jurij Bartolomej Vega was a Slovene mathematician, physicist and artillery officer.-Early life:...

 in 1794, and by Alexander John Thompson

Alexander John Thompson

Alexander John Thompson is the author of the last great table of logarithms, published in 1952. This table, the Logarithmetica britannica gives the logarithms of all numbers from 1 to 100000 to 20 places and supersedes all previous tables of similar scope, in particular the tables of Henry Briggs,...

 in 1952.
In 1632, he settled in London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 but ten years later with the onset of the English Civil War

English Civil War

The English Civil War was a series of armed conflicts and political machinations between Parliamentarians and Royalists...

, he moved to Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

 and later moved to The Hague

The Hague

The Hague is the capital city of the province of South Holland in the Netherlands. With a population of 500,000 inhabitants , it is the third largest city of the Netherlands, after Amsterdam and Rotterdam...

.

He died at The Hague in 1667.

The crater Vlacq

Vlacq (crater)

Vlacq is a prominent lunar impact crater that is located in the southeastern part of the Moon, and appears foreshortened when viewed from the Earth. This crater is adjacent to the northeastern rim of the larger Hommel, and to the northwest rim of Rosenberger....

on the Moon is named after him.