[r-t] FCHs

[Fielding Ian]

The split tenors falsness can be easily worked out by working out the false courses with the tenors together and then transposing all 7 other leads of the plain course by those courses. eg 3527486 transposed by 2436578 gives 5372486 then move to where the tenor is in 8ths place gives 7543628.

I attach a simplified explanation based on Segar's method of extraction.

Ian
Ian Fielding

Chief Technician - Pharmacy Patient Services Manager

0207 352 8121 x 4591

07872 995464 (Mobile)

Bleep 7415

-----Original Message-----
From: ringing-theory-bounces at bellringers.net [mailto:ringing-theory-bounces at bellringers.net] On Behalf Of Robin Woolley
Sent: 17 May 2010 08:15
To: ringing-theory at bellringers.net
Subject: [r-t] FCHs

I have every sympathy with Alex Tatlow. Most literature is out of print, and
there is never anything on the subject in the Ringing World - as there used
to be when I started ringing.

First - a literature review.

Wilson. No! No! No! No! No! The description is impenetrable and the grouping
letters he uses is his own. Today, the system we use is primarily due to
Roger Baldwin. The book purchased for this purpose would be a waste of
money. He deals with neither singles or split-tenors.

Maurice Hodgson published a pamphlet which is good for the 1st half - but
loses its simplicity about half-way through. Does not deal with
split-tenors. (Out of print).

The best I have found was by John Segar. It does not deal with
split-tenors - but allows FCHs to be extracted with facility. It is so old,
by the way, that it was printed on two pages of Foolscap (!!).

Leary is good, as had been mentioned.

Because of the poor quality of most literature, I wrote a book on it myself.
Anyone who has done some **simple** group theory should be able to cope. A
more algebraic approach enables you to, inter alia, prove that a method
starting x3x has the same initial falseness as one starting 3x3 for example.

BUT

By far the best solution is to have it explained by someone face-to-face you
know in your own area who knows how to do it first! Choose someone who
teaches Mathematics at, say A-level, if you can. There must be someone local
to you who can put you in touch with the most appropriate person. It is an
essentially simple topic - which therefore makes it most difficult to
explain in print!

Yours in hope(!)
Robin

PS - I might get around to scanning Segar's paper.



_______________________________________________
ringing-theory mailing list
ringing-theory at bellringers.net
http://bellringers.net/mailman/listinfo/ringing-theory_bellringers.net





DISCLAIMER:

The information contained in this email may be subject to public disclosure under the NHS Code of Openness or the Freedom of Information Act 2000.  Unless the information is legally exempt from disclosure, the confidentiality of this email, and your reply cannot be guaranteed.

The information and material in this email is intended for the use of the intended addressee or the person responsible for delivering it to the intended addressee.  It may contain privileged or confidential information and/or copyright material.

If you receive this email by mistake please advise the sender immediately by using the reply facility in your email software or notify Royal Brompton & Harefield NHS Trust Help Desk on +44(0) 20 7351 8696

Communication is not sent through a secure server; Royal Brompton & Harefield NHS Trust cannot accept responsibility for the accuracy of outgoing electronic mail.  Any views or opinions expressed are solely those of the author and do not represent the view of Royal Brompton & Harefield NHS Trust unless specifically stated.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: FCH extraction.xls
Type: application/vnd.ms-excel
Size: 19456 bytes
Desc: FCH extraction.xls
URL: <http://bellringers.net/pipermail/ringing-theory/attachments/20100517/8e78326d/attachment-0001.xls>