Cornelis Jacobsz Delff

Cornelis Jacobsz. Delff (1570–1643) was a Dutch Golden Age still life painter.

Portrait of Cornelis Jacobsz Delff by Tako Hajo Jelgersma after Jacob Willemsz Delff

Biography
Still-Life of Kitchen Utensils

Delff was born in Gouda. According to Houbraken he was first a pupil of his father Jacob Delff, and then of Cornelis van Haarlem.[1] He was the brother of the painter Willem Jacobsz Delff and a good painter of still lifes.[1]

According to the RKD he became a member of the Delft Guild of St. Luke in 1613, and his kitchen still life paintings were followed by Sir Nathaniel Bacon (1585-1627), Gillis Gillisz. de Bergh, and Jan Willemsz. van der Wilde.[2] [2] He died in Delft.

gollark: The combination of uniformly sized partitions and using the value on the "left" apparently causes bee.
gollark: https://math.stackexchange.com/questions/1803080/if-the-left-riemann-sum-of-a-function-converges-is-the-function-integrable
gollark: It seems to be if you use the WRONG version, is the thing.
gollark: Apparently, if you integrate the "characteristic function of the rational numbers" (1 if rational, 0 otherwise) from 0 to 1, you will attain 1, because x is always rational (because b - a is 1, and all the partitions are the same size), even though it should be 0.
gollark: For another thing, as I found out while reading a complaint by mathematicians about the use of Riemann integrals over gauge integrals, if you always take the point to "sample" as the left/right/center of each partition *and* the thing is evenly divided up into partitions, it's actually wrong in some circumstances.

References
  1. (in Dutch) Cornelis Jacobsz. Delff Biography in De groote schouburgh der Nederlantsche konstschilders en schilderessen (1718) by Arnold Houbraken, courtesy of the Digital library for Dutch literature
  2. Cornelis Jacobsz. Delff in the RKD
  • Vermeer and The Delft School, a full text exhibition catalog from The Metropolitan Museum of Art, which has material on Cornelis Jacobsz Delff
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