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Everything about Geometric discrepancy

Geometric discrepancy theory is a sub-field of discrepancy theory, that deals with balancing points in geometric sets, such as intervals or rectangles. Two closely-related research questions in this field are:Two-color discrepancy: Given a set of objects in a geometric space, and a set of points in the same space, can we color each point in one of two different colors, such that each object contains roughly the same number of points of each color? Formally, the discrepancy of an object is defined as the difference between the number of white points and the number of black points in that object; the goal is to color the points such that the maximum discrepancy of an object is as small as possible. Expected-value discrepancy : Given a set of objects in a geometric space, and an integer N, can we design a set of N points, such that each object contains a fraction of the points that is roughly proportional to its size? Formally, the discrepancy of an object is defined as the difference between the number of points in that object, and the expected number of points if the points were distributed uniformly at random; the goal is to find a set of points such that the maximum discrepancy of an object is as small as possible. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Geometric discrepancyA 5-minute orientation
  2. Skim a recent paper: Flat-band Fulde-Ferrell-Larkin-Ovchinnikov state from quantum geometric discrepancyInfluential work since 2022
  3. Pick up a classic book: Sampling in Combinatorial and Geometric Set SystemsThe most-reprinted book on the subject
  4. Read the landmark paper: Bracketing numbers for axis-parallel boxes and applications to geometric discrepancyCited 42 times
  5. Go sideways: Discrepancy theoryA closely related topic
  6. Go sideways: Moment curveA closely related topic

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