2812481591 [any, it/its]

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Joined 3 years ago
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Cake day: July 19th, 2021

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  • Think of the election as a Bus route from source, S, to Target, T. a directed graph G=(V,E), where V is the set of vertices (nodes) and E is the set of edges. Each edge (i,j)∈E has an associated non-negative cost (or length) cij

    Let xij​ be a binary variable that equals 1 if edge (i,j) is included in the shortest path, and 0 otherwise.

    Minimize ∑​_(i,j)∈E [cij​xij​]

    Subject to:

    ∑_j:(s,j)∈E[xsj]−∑_i:(i,s)∈E [xis]=1

    ∑_i:(i,t)∈E [xit]−∑_j:(t,j)∈E [xtj]=−1

    ∑_i:(i,k)∈E [xik]−∑_j:(k,j)∈E [xkj]=0∀k∈V∖{s,t}

    xij∈{0,1}∀(i,j)∈E






  • if anyone is looking for their first E-reader, look for a $30 used one on ebay or someplace. You’re not going to regret it. E-readers are just trying to replicate the features of a book, which is not complicated technology. Everything else manufacturers do to increase the price involves inventing needs. you wont miss a color adjustable backlight, you can read with a light. you don’t need 50gb of storage when a book is 3mb and calibre manages your library. a 600 DPI resolution makes text crisper, but not substantially more readable than 167 DPI, since eInk dots innately have anti-aliasing properties that makes them look higher resolution than the specs suggest. a dictionary pop-up when you highlight words is also extra, but my nook touch had that 10 years ago, and it cost $30 back then too. A lot of people enjoy their E-readers most of all because of their simplicity and separation from other distractions, so it stands to reason, lots of people might be happier with a less featured device.