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  2. Longarm quilting - Wikipedia

    en.wikipedia.org/wiki/Longarm_quilting

    Longarm quilting is the process by which a longarm sewing machine is used to sew together a quilt top, quilt batting and quilt backing into a finished quilt.. A complete longarming system typically consists of a sewing machine head, a frame, a table with a layer of plastic (under which is placed a pantograph), and several rollers on which the fabric layers and batting are attached.

  3. QR algorithm - Wikipedia

    en.wikipedia.org/wiki/QR_algorithm

    In numerical linear algebra, the QR algorithm or QR iteration is an eigenvalue algorithm: that is, a procedure to calculate the eigenvalues and eigenvectors of a matrix.The QR algorithm was developed in the late 1950s by John G. F. Francis and by Vera N. Kublanovskaya, working independently.

  4. Diagonal matrix - Wikipedia

    en.wikipedia.org/wiki/Diagonal_matrix

    The term diagonal matrix may sometimes refer to a rectangular diagonal matrix, which is an m-by-n matrix with all the entries not of the form d i,i being zero. For example: [ 1 0 0 0 4 0 0 0 − 3 0 0 0 ] or [ 1 0 0 0 0 0 4 0 0 0 0 0 − 3 0 0 ] {\displaystyle {\begin{bmatrix}1&0&0\\0&4&0\\0&0&-3\\0&0&0\\\end{bmatrix}}\quad {\text{or}}\quad ...

  5. Medicare premiums rise for 2025, nicking retirees' Social ...

    www.aol.com/finance/medicare-premiums-rise-2025...

    The more you earn, the more you pay. Since 2007, a beneficiary’s Part B monthly premium is based on his or her income. About 8% of Medicare users earn too much to qualify for the standard Part B ...

  6. 2025 NFL mock draft roundup: Experts pick Shedeur ... - AOL

    www.aol.com/2025-nfl-mock-draft-roundup...

    We're one week closer to the end of the 2024 NFL season and cementing the top half of the 2025 NFL draft order.There are nine teams with at least 10 losses entering Week 16 so the order could ...

  7. Teen killed, another wounded in vicious stabbing ‘out of a ...

    www.aol.com/teen-killed-another-wounded-vicious...

    A 17-year-old boy was killed and another teen wounded during a vicious stabbing on a New York City sidewalk Thursday night - that left onlookers horrified by the blood massacre.

  8. Log Cabin (quilt block) - Wikipedia

    en.wikipedia.org/wiki/Log_Cabin_(quilt_block)

    The Log Cabin quilt block is a North American pieced quilt pattern where narrow strips of fabric surround a central square. Usually, the block is bisected diagonally, with one half using lighter colors than the other half. [1] Sometimes the shading is not diagonal, but in alternating rectangles. [2]

  9. Rotation matrix - Wikipedia

    en.wikipedia.org/wiki/Rotation_matrix

    The sum of the entries along the main diagonal (the trace), plus one, equals 4 − 4(x 2 + y 2 + z 2), which is 4w 2. Thus we can write the trace itself as 2w 2 + 2w 2 − 1; and from the previous version of the matrix we see that the diagonal entries themselves have the same form: 2x 2 + 2w 2 − 1, 2y 2 + 2w 2 − 1, and 2z 2 + 2w 2 − 1. So ...

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