[r-t] Plain bob Lead heads

[John David]

Not a proof,  but certainly on 6 and 8 a manual search for all possible lead heads with pn 14, 16, does not produce a plain bob lead head.

John David

Guernsey

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Subject: ringing-theory Digest, Vol 190, Issue 6

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Today's Topics:

   1. Plain Bob leadheads (Mark Davies)


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Message: 1
Date: Fri, 19 Feb 2021 09:14:09 +0000
From: Mark Davies <mark at snowtiger.net>
To: ringing-theory at bellringers.org
Subject: [r-t] Plain Bob leadheads
Message-ID: <bfcf2c3d-eece-d238-42b3-c52d4def0121 at snowtiger.net>
Content-Type: text/plain; charset=utf-8; format=flowed

Please can someone produce, or point me at, a concise proof of this lemma:

PB1: In a palindromic treble-dominated method with Plain Bob leadheads,
on an even number of bells, the lead end place notations must be 12 or 1n.

Thank you!

MBD



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