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A293107 Irregular triangle read by rows: universal linear relationships among polynomial means for even degrees. 1
5, -6, 1, 77, -120, 60, -20, 3, 669, -1260, 1050, -700, 315, -84, 10, 4609, -10080, 11760, -11760, 8820, -4704, 1680, -360, 35, 55991, -13860, 207900, -277200, 291060, -232848, 138600, -59400, 17325, -3080, 252, 785633, -2162160, 3963960, -6606600, 8918910 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Irregular triangular array of coefficients of universal linear relationships among means of all even-degree (complex-valued) polynomials, beginning with degree = 4 at top of triangle. Let phi(D,d,r) denote the mean of a generic degree D polynomial's order d derivative averaged over the (D-r) roots of the order r derivative of the polynomial. The tabulated coefficients, c(-), satisfy Sum_{k=1..(D-d-1)} c(k)*phi(D,d,k) = 0, with d always equal to 0. The first row of the triangle has 3 entries, while each subsequent row has an additional 2 entries.
Results have been computed in all degrees up to D=49, observing: (1) in all even degrees beyond 2, there is a single such linear relationship; (2) in all odd degrees beyond 3, there is a 2-dimensional family of such linear relationships.
In each row of the triangle, the sum of all positive coefficients equals the sum of all negative coefficients.
LINKS
G. G. Wojnar, D. Sz. Wojnar, and L. Q. Brin, Universal Peculiar Linear Mean Relationships in All Polynomials, arXiv:1706.08381 [math.GM], 2017.
EXAMPLE
Triangle begins:
5, -6, 1;
77, -120, 60, -20, 3;
669, -1260, 1050, -700, 315, -84, 10;
4609, -10080, 11760, -11760, 8820, -4704, 1680, -360, 35;
...
Example 1: For any polynomial of degree D=4, it holds that 5*phi(4,0,1) - 6*phi(4,0,2) + 1*phi(4,0,3) = 0.
Example 2: For any polynomial of degree D=6, it holds that 77*phi(6,0,1) - 120*phi(6,0,2) + 60*phi(6,0,3) - 20*phi(6,0,4) + 3*phi(6,0,5) = 0.
CROSSREFS
Sequence in context: A086646 A181612 A216808 * A113106 A171273 A157832
KEYWORD
sign,tabf
AUTHOR
STATUS
approved

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)