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  2. 4 Coins From the 1920s That Are Worth a Lot of Money - AOL

    www.aol.com/finance/4-coins-1920s-worth-lot...

    As of December 2024, a 1920 Indian Head Gold Coin in circulated condition is worth between $20,000 and $75,000. But that value rises to as much as $2 million for specimens in pristine ...

  3. A coin can be worth a ton of money -- a pretty penny, one might say -- if it's rare and has enough historical significance. ... CoinTrackers.com finds that the value of a 1920 S Indian Head Gold ...

  4. 7 Coins Worth A Lot of Money in 2024 - AOL

    www.aol.com/finance/7-coins-worth-lot-money...

    This U.S. gold coin, with a denomination of $20, is one of the most highly sought-after because only 14 are known to exist. ... 6 Best Kirkland Items To Buy at Costco in October. ... 7 Coins Worth ...

  5. Hypograph (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Hypograph_(mathematics)

    Hypograph of a function. In mathematics, the hypograph or subgraph of a function: is the set of points lying on or below its graph. A related definition is that of such a function's epigraph, which is the set of points on or above the function's graph.

  6. Epigraph (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Epigraph_(mathematics)

    Epigraph of a function A function (in black) is convex if and only if the region above its graph (in green) is a convex set.This region is the function's epigraph. In mathematics, the epigraph or supergraph [1] of a function: [,] valued in the extended real numbers [,] = {} is the set ⁡ = {(,) : ()} consisting of all points in the Cartesian product lying on or above the function's graph. [2]

  7. Glossary of numismatics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_numismatics

    A coin that has never been used, thus retaining all or most of its original luster. [1] uniface A coin struck with the design on one side only. union A proposed United States gold coin worth $100 (one hundred dollars). Only one pattern "half union" is known to exist. Platinum $100 coins are not technically "unions". unique

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