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| revprev | Admin | Jun 15'24 at 1:31 | +36 | ||
| revcur | Bot | (Created page with "<div class="d-none"><math> \newcommand{\NA}{{\rm NA}} \newcommand{\mat}[1]{{\bf#1}} \newcommand{\exref}[1]{\ref{##1}} \newcommand{\secstoprocess}{\all} \newcommand{\NA}{{\rm NA}} \newcommand{\mathds}{\mathbb}</math></div> A ''lead change'' in a random walk occurs at time <math>2k</math> if <math>S_{2k-1}</math> and <math>S_{2k+1}</math> are of opposite sign. <ul><li> Give a rigorous argument which proves that among all walks of length <math>2m</math> that have an...") | Jun 9'24 at 3:36 | +871 |