Talk:International Standard Book Number

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Recognition generated[edit]

What does "ISBN configuration of recognition was generated in 1967 in the United Kingdom by David Whitaker" mean?203.80.61.102 (talk) 19:36, 3 September 2017 (UTC)

Pattern for English language ISBNs[edit]

This table is wrong. The English registration group does not have a simple monotonically increasing set of registrants, unlike the Chinese and Japanese registration groups. The English group jumps about – 978-0: 00-19, 200-227, 2280-2289, 229-638, 6390-6398, 6399000-6399999, 640-647, 6480000-6489999, 649-654, 6550-6559, 656-699, 7000-8499, 85000-89999, 900000-949999, 9500000-9999999; 978-1: 00-09, 100-399, 4000-5499, 55000-73199, 7320000-7399999, 74000-77499, 7750000-7753999, 77540-86979, 869800-972999, 9730-9877, 987800-998999, 9990000-9999999 (as of Sep 2017). [1]

References

As the two English regions have different registrant patterns, it may be simplest to change the example to the Chinese or Japanese registration groups. — Preceding unsigned comment added by 86.7.33.6 (talk) 13:40, 12 September 2017 (UTC)

Semi-protected edit request on 9 October 2017[edit]

The book cited in footnote 6, supposedly by Yaron Svoray and Lawrence Malkin, was never published, so I don't know how you can footnote it. Has anyone actually reada book that does not exist? Lawrence Malkin (author of "Krueger's Men") malkinlit@msn.com 96.246.59.176 (talk) 22:21, 9 October 2017 (UTC)

Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format. SparklingPessimist Scream at me! 00:56, 10 October 2017 (UTC)
@SparklingPessimist: The post was clearly about a footnote, almost certainly in an article, so {{subst:ESp|xy}} was not appropriate - {{subst:ESp|mis}} would have been far better:
Not done: this is the talk page for discussing improvements to the page International Standard Book Number. Please make your request at the talk page for the article concerned. --Redrose64 🌹 (talk) 09:38, 10 October 2017 (UTC)

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Price of registration[edit]

I don't think that the price of getting an ISBN number issued in different countries is encyclopedic information. I propose we remove it. --Macrakis (talk) 21:23, 5 April 2018 (UTC)

Agreed. --Redrose64 🌹 (talk) 23:28, 5 April 2018 (UTC)
Agreed, as the figures are unlikely to be kept up to date; and also as, with the prices given in different currencies, there's no immediate way of comparing them. However, I think that in cases where countries/territories issue ISBNs free, that information should remain. GrindtXX (talk)

Incorrect ISBN-13 check-digit calculation[edit]

The calculation:

r = (10 - (sum) mod 10)

fails for ISBN-13 values where the remainder is 0 such as:

  • 978-0-522-86467-0
  • 978-3-598-21549-0
  • 978-3-598-21552-0
  • 978-3-598-21565-0
  • 978-3-598-21578-0
  • 978-3-598-21581-0
  • 978-3-598-21594-0

A change to:

r = (10 - sum) mod 10

works for these cases.

A sample python program is available at:

https://gist.github.com/tonyallan/e8e55bfcf6868641dc323316603b1cb7

with some test data:

https://gist.github.com/tonyallan/2e4cce9f16232eb6517e0eebca0da945

python3 isbn.py < isbn.txt

TonyAllanAU (talk) 06:48, 24 April 2018 (UTC)