claim: SummerSlam had no pre-show, but contested ten matches.
evidence: In mathematics and numerical analysis , in order to accelerate convergence of an alternating series , Euler 's transform can be computed as follows .. mathematics. mathematics. numerical analysis. numerical analysis. alternating series. alternating series. Compute a row of partial sums  :. and form rows of averages between neighbors ,. The first column then contains the partial sums of the Euler transform .. Adriaan van Wijngaarden 's contribution was to point out that it is better not to carry this procedure through to the very end , but to stop two-thirds of the way .. Adriaan van Wijngaarden. Adriaan van Wijngaarden. If are available , then is almost always a better approximation to the sum than. Leibniz formula for pi , , gives the partial sum , the Euler transform partial sum and the van Wijngaarden result -LRB- relative errors are in round brackets -RRB- .. Leibniz formula for pi. Leibniz formula for pi. 1.00000000 0.66666667 0.86666667 0.72380952 0.83492063 0.74401154 0.82093462 0.75426795 0.81309148 0.76045990 0.80807895 0.76460069 0.80460069. 0.83333333 0.76666667 0.79523810 0.77936508 0.78946609 0.78247308 0.78760129 0.78367972 0.78677569 0.78426943 0.78633982 0.78460069. 0.80000000 0.78095238 0.78730159 0.78441558 0.78596959 0.78503719 0.78564050 0.78522771 0.78552256 0.78530463 0.78547026. 0.79047619 0.78412698 0.78585859 0.78519259 0.78550339 0.78533884 0.78543410 0.78537513 0.78541359 0.78538744. 0.78730159 0.78499278 0.78552559 0.78534799 0.78542111 0.78538647 0.78540462 0.78539436 0.78540052. 0.78614719 0.78525919 0.78543679 0.78538455 0.78540379 0.78539555 0.78539949 0.78539744. 0.78570319 0.78534799 0.78541067 0.78539417 0.78539967 0.78539752 0.78539847. 0.78552559 0.78537933 0.78540242 0.78539692 0.78539860 0.78539799. 0.78545246 0.78539087 0.78539967 0.78539776 0.78539829. 0.78542166 0.78539527 0.78539871 0.78539803. 0.78540847 0.78539699 0.78539837. 0.78540273 0.78539768. 0.78540021. This table results from the J formula ` b11 .8 ' 8 !. J ( programming language ). :2 -  : & ^  : n +  /  \ -LRB-   1 ^ n -RRB- * % 1 +2 * n = .. i. 13 In many cases the diagonal terms do not converge in one cycle so process of averaging is to be repeated with diagonal terms by bringing them in a row .. This will be needed in an geometric series with ratio -4 .. This process of successive averaging of the average of partial sum can be replaced by using formula to calculate the diagonal term .