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Revision History for A131650

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A131650

Number of symbols in Babylonian numeral representation of n.
(history; published version)

#26 by N. J. A. Sloane at Tue Jun 14 07:00:40 EDT 2022

STATUS

reviewed

approved

#25 by Joerg Arndt at Tue Jun 14 01:56:58 EDT 2022

STATUS

proposed

reviewed

#24 by Michel Marcus at Tue Jun 14 00:56:57 EDT 2022

STATUS

editing

proposed

#23 by Michel Marcus at Tue Jun 14 00:56:24 EDT 2022

PROG

(PARI) a(n) = n\10 + n%10 \\ for n <= 59. Michel Marcus, Jul 12 2013

Discussion

Tue Jun 14

00:56

Michel Marcus: n <=59 is not enough

#22 by Michel Marcus at Tue Jun 14 00:55:36 EDT 2022

LINKS

Yale Babylonian Collection, <a href="http://www.math.ubc.ca/%7Ecass/Euclid/ybc/ybc.html">High resolution photographs, descriptions and analysis of the root(2) tablet (YBC 7289)</a> from the Yale Babylonian Collection.

EXTENSIONS

Terms a(60)..-a(81) from Wolfdieter Lang, Feb 21 2017 (to distinguish it from A007953)

#21 by Michel Marcus at Tue Jun 14 00:52:41 EDT 2022

LINKS

University of St Andrews, <a href="https://mathshistory.st-andrews.ac.uk/HistTopics/Babylonian_numerals/">Babylonian numerals</a>.

<a href="http://www-gap.dcs.st-and.ac.uk/~history/HistTopics/Babylonian_numerals.html">Babylonian numerals</a>.

STATUS

approved

editing

#20 by N. J. A. Sloane at Sun Jan 14 14:15:51 EST 2018

STATUS

editing

approved

#19 by N. J. A. Sloane at Sun Jan 14 14:15:49 EST 2018

COMMENTS

For the sexagesimal - decimal representation of n see A282621A055643.

STATUS

approved

editing

#18 by N. J. A. Sloane at Sun Jan 14 14:15:08 EST 2018

STATUS

editing

approved

#17 by N. J. A. Sloane at Sun Jan 14 14:15:06 EST 2018

COMMENTS

The sum of the digits of A282621A055643(n) = a(n).

CROSSREFS

Cf. A006968, A007953, A055643, A281863. , A282622, A283621.

STATUS

approved

editing