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Calendrical Calculations (Englisch) Gebundene Ausgabe – 10. Dezember 2007


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Produktinformation

  • Gebundene Ausgabe: 512 Seiten
  • Verlag: Cambridge University Press; Auflage: 3 (10. Dezember 2007)
  • Sprache: Englisch
  • ISBN-10: 052188540X
  • ISBN-13: 978-0521885409
  • Größe und/oder Gewicht: 15,6 x 2,7 x 23,4 cm
  • Durchschnittliche Kundenbewertung: 4.0 von 5 Sternen  Alle Rezensionen anzeigen (4 Kundenrezensionen)
  • Amazon Bestseller-Rang: Nr. 1.080.114 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)
  • Komplettes Inhaltsverzeichnis ansehen

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Produktbeschreibungen

Pressestimmen

'Because years, months, and days don't mesh simply, calendar making has been a challenge throughout history. Reingold and Dershowitz's compendium, here in its third edition, has already established itself as the definitive reference on calendrical structures. Their manual displays conversions between all the major calendar systems as well as between many fascinating schemes from bygone civilizations.' Owen Gingerich, Harvard-Smithsonian Center for Astrophysics

'One of the most fascinating books I've read all year. Takes chronology into the computer age with impressive erudition and elan. Just finding out what the calendar rules are is usually close to impossible: Calendrical Calculations tells you how to use them too. A must for everyone who worries about days, months, years – and why they never quite fit.' Ian Stewart

' … a good, comprehensive documentation of software for calculating dates on very many calendars.' P. Kenneth Seidelmann, Director of Astrometry, U.S. Naval Observatory

'… something of immense value … a true labor of love, this cultural service to humanity should be in every library of the world.' Choice

'If you are interested in Calendars this book is a must have - an excellent mind-broadening book.' Journal of the ACCU

' … this book must surely become the standard work on calendar conversions. No historian, chronologist or recreational mathematician should be without it.' E.G. Richards, Nature

Über das Produkt

This new edition of the popular calendars book expands the algorithmic treatment of the previous edition to new calendar variants: generic cyclical calendars and astronomical lunar calendars as well as the Korean, Vietnamese, Aztec, and Tibetan calendars. LISP code for all the algorithms are available on the Web.

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Buchdeckel | Copyright | Inhaltsverzeichnis | Auszug | Stichwortverzeichnis
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Die hilfreichsten Kundenrezensionen

6 von 6 Kunden fanden die folgende Rezension hilfreich Von Ein Kunde am 1. April 1999
Format: Taschenbuch
If it were possible to give this book a ZERO rating, I would have done so. Right on page xxi, the authors purport to license their "Functions (code, formulas, and calendar data)" subject to both copyright and unspecified pending PATENT claims, and to restrict the use of such "Functions" to "strictly personal use." This is a book review, not a tutorial on patent law, so I don't even want to comment on the dubious validity of a PATENT claim covering purely mathematical functions. The authors are entitled to copyright protection on their actual source code examples, but asserting PATENT claims over mathematical functions is fundamentally abusive to the reader. As a result, if you have any practical goal for the information in this book and are considering it for other than mere personal amusement value, buy some other book instead. The license is particularly egregious since, on page xix, the authors explicitly acknowledge that all but two of the historical calendars are represented in GNU Emacs from the Free Software Foundation, proponent of the "copyleft" GNU General Public License!
Kommentar War diese Rezension für Sie hilfreich? Ja Nein Feedback senden...
Vielen Dank für Ihr Feedback. Wenn diese Rezension unangemessen ist, informieren Sie uns bitte darüber.
Wir konnten Ihre Stimmabgabe leider nicht speichern. Bitte erneut versuchen
Format: Taschenbuch
The book explains the structure of 14 calendars, and gives easily comprehensible formulae for the conversion of a date in any of these calendars into a day count, and back to the calendar date. It also includes many holidays for these calendars.
Rather than on the history of calendars or their cultural background, the focus is on a lucid, correct, and complete exposition of their functional principles. Extensive bibliographic references are given to the primary sources for each calendar.
A highlight is the complete specification of several calendars depending on fairly precise timings of astronomical phenomena (Chinese calendar and some Hindu religious calendars).
To make it self-contained, the book explains the necessary mathematical and astronomical background. The astronomical models are taken from the classic 1991 book "Astronomical Algorithms" by Jean Meeus.
I especially like the presentation of the calendrical formulae in an essentially non-algorithmic manner, using normal mathematical notation. This makes it easy to further analyze these formulae.
For instance, if one wants to know how good an approximation to the spring equinox is March 21 in the Gregorian calendar, one finds from the formula on page 36 in the book that midnight of March 21 in Gregorian year Y is exactly
Y·365.2425 - (Y mod 4)·97/400 + (floor(Y/4) mod 25)·3/100 - (floor(Y/100) mod 4)/4
days after midnight of March 21 in Gregorian year 0, which ranges from Y·365.2425 - 1.4775 up to Y·365.2425 + 0.72. Thus, even assuming the Gregorian approximation of 365.2425 days to the tropical year, spring equinoxes are distributed over at least three dates in March in the Gregorian calendar.
Lesen Sie weiter... ›
Kommentar War diese Rezension für Sie hilfreich? Ja Nein Feedback senden...
Vielen Dank für Ihr Feedback. Wenn diese Rezension unangemessen ist, informieren Sie uns bitte darüber.
Wir konnten Ihre Stimmabgabe leider nicht speichern. Bitte erneut versuchen
Von danny@disney.com am 19. Januar 1999
Format: Taschenbuch
In the course of building a 10,000 year clock I needed to know a lot of obscure details about various calendar systems. Calendrical Calculations not only answered all my questions, but it also introduced me to a lot of interesting information that I never would have thought to ask about. It is one of those rare books that is both an authoritative reference source and a fun read.
Kommentar War diese Rezension für Sie hilfreich? Ja Nein Feedback senden...
Vielen Dank für Ihr Feedback. Wenn diese Rezension unangemessen ist, informieren Sie uns bitte darüber.
Wir konnten Ihre Stimmabgabe leider nicht speichern. Bitte erneut versuchen
Format: Taschenbuch
This is by far the best source for converting calendar dates of historical and modern calendars from one to each other, calculating some calendrical puzzles (on which date in the Julian calendar will be next time Friday, the 13th, and Full Moon?), and much more. A great work!
Kommentar War diese Rezension für Sie hilfreich? Ja Nein Feedback senden...
Vielen Dank für Ihr Feedback. Wenn diese Rezension unangemessen ist, informieren Sie uns bitte darüber.
Wir konnten Ihre Stimmabgabe leider nicht speichern. Bitte erneut versuchen

Die hilfreichsten Kundenrezensionen auf Amazon.com (beta)

Amazon.com: 12 Rezensionen
83 von 98 Kunden fanden die folgende Rezension hilfreich
Potentially good book rendered totally useless by license. 1. April 1999
Von Ein Kunde - Veröffentlicht auf Amazon.com
Format: Taschenbuch
If it were possible to give this book a ZERO rating, I would have done so. Right on page xxi, the authors purport to license their "Functions (code, formulas, and calendar data)" subject to both copyright and unspecified pending PATENT claims, and to restrict the use of such "Functions" to "strictly personal use." This is a book review, not a tutorial on patent law, so I don't even want to comment on the dubious validity of a PATENT claim covering purely mathematical functions. The authors are entitled to copyright protection on their actual source code examples, but asserting PATENT claims over mathematical functions is fundamentally abusive to the reader. As a result, if you have any practical goal for the information in this book and are considering it for other than mere personal amusement value, buy some other book instead. The license is particularly egregious since, on page xix, the authors explicitly acknowledge that all but two of the historical calendars are represented in GNU Emacs from the Free Software Foundation, proponent of the "copyleft" GNU General Public License!
24 von 26 Kunden fanden die folgende Rezension hilfreich
highly readable and reliable description of many calendars 28. April 1999
Von Ein Kunde - Veröffentlicht auf Amazon.com
Format: Taschenbuch
The book explains the structure of 14 calendars, and gives easily comprehensible formulae for the conversion of a date in any of these calendars into a day count, and back to the calendar date. It also includes many holidays for these calendars.
Rather than on the history of calendars or their cultural background, the focus is on a lucid, correct, and complete exposition of their functional principles. Extensive bibliographic references are given to the primary sources for each calendar.
A highlight is the complete specification of several calendars depending on fairly precise timings of astronomical phenomena (Chinese calendar and some Hindu religious calendars).
To make it self-contained, the book explains the necessary mathematical and astronomical background. The astronomical models are taken from the classic 1991 book "Astronomical Algorithms" by Jean Meeus.
I especially like the presentation of the calendrical formulae in an essentially non-algorithmic manner, using normal mathematical notation. This makes it easy to further analyze these formulae.
For instance, if one wants to know how good an approximation to the spring equinox is March 21 in the Gregorian calendar, one finds from the formula on page 36 in the book that midnight of March 21 in Gregorian year Y is exactly
Y·365.2425 - (Y mod 4)·97/400 + (floor(Y/4) mod 25)·3/100 - (floor(Y/100) mod 4)/4
days after midnight of March 21 in Gregorian year 0, which ranges from Y·365.2425 - 1.4775 up to Y·365.2425 + 0.72. Thus, even assuming the Gregorian approximation of 365.2425 days to the tropical year, spring equinoxes are distributed over at least three dates in March in the Gregorian calendar.
Such reasonings would be very difficult if the book specified the calendars only in terms of programming language code.
The formulae are designed so that it is easy to incorporate them into code written in the programming language of your choice. This use is further supported by a set of test dates in an appendix. Another appendix lists an example implementation of all the formulae, in the programming language Common Lisp. This code (intended for personal use) can also be downloaded from the internet.
But this book is much more than a collection of programming recipes for many calendars -- it makes you understand the structure of those calendars. Ambitious readers can even find the data and the methods to construct their own calendrical formulae.
What would I like to be changed in the book? Not much. Some of the calendrical formulae could be further simplified, the astronomical terminology could be modernized in places, and perhaps some additional historical information could be added. And, of course, even more calendars! For instance, some of the proposed reformed calendars, a more widespread version of the Persian calendar, or an historic Japanese calendar.
This book is a must for everybody wanting reliable and highly readable information on the functional principles of the world's calendars.
Michael Deckers
41 von 48 Kunden fanden die folgende Rezension hilfreich
An excellent book with a mean spirited license 4. Januar 2000
Von John - Veröffentlicht auf Amazon.com
Format: Taschenbuch
An excellent book on the history and workings of various calendars. But don’t use the source code! The licensing agreement is a trap. Use the code in GNU Emacs from the Free Software Foundation distributed under the General Public License. It does everything the authors code does (except for two obscure calendars) and it's free and always will be.
6 von 6 Kunden fanden die folgende Rezension hilfreich
Excellent 3rd edition has algorithms that are hard to find 20. Februar 2008
Von calvinnme - Veröffentlicht auf Amazon.com
Format: Taschenbuch Verifizierter Kauf
This is an interesting little book that provides a unified algorithmic presentation for more than two dozen calendars of current and historical interest. The book gives precise descriptions of each calendar and makes accurate calendar algorithms available for computer programmers. The complete workings of each calendar are described in verbage and then mathematically. Working computer programs are included in an appendix and on the accompanying CD.

The one thing I didn't care for was the choice of Lisp as the implementation language in appendix B. However, this isn't too big of a problem since equivalent Java programs are on the book's website along with the Lisp implementations. Also, since the mathematical equations of conversion are clearly given, you can choose your own implementation language with few problems. The following is the table of contents:

1. Introduction

Part I. Arithmetical Calendars:
2. The Gregorian calendar
3. The Julian calendar
4. The Coptic and Ethiopic calendars
5. The ISO calendar
6. The Islamic calendar
7. The Hebrew calendar
8. The Ecclesiastical calendars
9. The Old Hindu calendars
10. The Mayan calendar
11. The Balinese Pawukon calendar
12. Generic cyclical calendars

Part II. Astronomical Calendars:
13. Time and astronomy
14. The Persian calendar
15. The Baha'i calendar
16. The French Revolutionary calendar
17. The Chinese calendar
18. The modern Hindu calendars
19. The Tibetan calendar
20. Astronomical lunar calendars coda

Part III. Appendices:
A. Function, parameter, and constant types
B. Lisp implementation
C. Sample data.
11 von 14 Kunden fanden die folgende Rezension hilfreich
Just what I needed. 19. Januar 1999
Von Danny Hillis - Veröffentlicht auf Amazon.com
Format: Taschenbuch
In the course of building a 10,000 year clock I needed to know a lot of obscure details about various calendar systems. Calendrical Calculations not only answered all my questions, but it also introduced me to a lot of interesting information that I never would have thought to ask about. It is one of those rare books that is both an authoritative reference source and a fun read.
Waren diese Rezensionen hilfreich? Wir wollen von Ihnen hören.