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Lawrence Hollom (also called DrCeasium, born 1998 in Britain) is a googologist who invented hyperfactorial array notation.[1] He wrote about it in his large number site, and claimed that his dimensional arrays reach the large Veblen ordinal as well.

Hollom's personal style in googological naming is marked by the suffix "-xul" (as in faxul) in combination with SI prefixes.

Hollom also invented the iota function, a pseudo-function that could theoretically be the fastest-growing function of all time. He has more recently worked with uncomputable functions, including bounding the xi function and devising his own doodle function.

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See also

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