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  2. Sidon sequence - Wikipedia

    en.wikipedia.org/wiki/Sidon_sequence

    Specifically, he asked if the set of fifth powers is a Sidon set. Ruzsa came close to this by showing that there is a real number c {\displaystyle c} with 0 < c < 1 {\displaystyle 0<c<1} such that the range of the function f ( x ) = x 5 + ⌊ c x 4 ⌋ {\displaystyle f(x)=x^{5}+\lfloor cx^{4}\rfloor } is a Sidon sequence, where ...

  3. Notching - Wikipedia

    en.wikipedia.org/wiki/Notching

    The first punch & die type tool for notching tube & pipe was invented in Chicago by Julius Vogel, who was issued a US patent in 1938. [1] The accuracy of punch notching is good, depending on the care with which it's carried out. For manual folding work, prior notching can often improve resultant accuracy of the folding itself.

  4. Die forming (plastics) - Wikipedia

    en.wikipedia.org/wiki/Die_Forming_(Plastics)

    Die swell is an expansion of the melt as the pressure is released, and is dependent on polymer chemistry and die design. After curing, the solid, continuous part is drawn onto a take-up roller or cut into transportable lengths, depending on the type of part. This process may vary significantly depending on the type of die and extrusion process. [1]

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. 3 ways to minimize your own risk of falling like Pelosi and ...

    www.aol.com/3-ways-minimize-own-risk-130041920.html

    Senate Minority Leader Mitch McConnell takes a question from a reporter during a news conference following the weekly Senate Republican policy luncheon at the U.S. Capitol on Nov. 19, 2024.

  7. Charpy impact test - Wikipedia

    en.wikipedia.org/wiki/Charpy_impact_test

    The Standard methods for Notched Bar Impact Testing of Metallic Materials can be found in ASTM E23, [8] ISO 148-1 [9] or EN 10045-1 (retired and replaced with ISO 148-1), [10] where all the aspects of the test and equipment used are described in detail.

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