Re: [math-fun] Rot13 and other substitution ciphers (was Re: Quickies)
Keith F. Lynch writes:
The longest words that remain words after being rot13'd are Chechen <-> Purpura.
Checking my unabridged, I see another cromulent pair at 7: nowhere <-> abjurer They also have the advantage of being usable for Scrabble. -- Jim Gillogly
<< They also have the advantage of being usable for Scrabble. >> That's an advantage ?! WFL On 4/15/16, Jim Gillogly <scryer@gmail.com> wrote:
Keith F. Lynch writes:
The longest words that remain words after being rot13'd are Chechen <-> Purpura.
Checking my unabridged, I see another cromulent pair at 7: nowhere <-> abjurer
They also have the advantage of being usable for Scrabble.
-- Jim Gillogly _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com https://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun
Some website I looked at claimed that nowhere <—> abjurer was the unique longest such rot13 pair. But it wasn't clear which wordlist this referred to, or whether capitalized or hyphenated word counted. So, possibly the record of 7 letters can be embiggened. —Dan
On Apr 15, 2016, at 11:11 AM, Fred Lunnon <fred.lunnon@gmail.com> wrote:
On 4/15/16, Jim Gillogly <scryer@gmail.com <mailto:scryer@gmail.com>> wrote:
Keith F. Lynch writes:
The longest words that remain words after being rot13'd are Chechen <-> Purpura.
Checking my unabridged, I see another cromulent pair at 7: nowhere <-> abjurer
Using the enable lexicon, this is the *only* such pair of length greater than 5. And there are only a few 5's. This is surprising to me. On Fri, Apr 15, 2016 at 11:42 AM, Dan Asimov <dasimov@earthlink.net> wrote:
Some website I looked at claimed that nowhere <—> abjurer was the unique longest such rot13 pair. But it wasn't clear which wordlist this referred to, or whether capitalized or hyphenated word counted. So, possibly the record of 7 letters can be embiggened.
—Dan
On Apr 15, 2016, at 11:11 AM, Fred Lunnon <fred.lunnon@gmail.com> wrote:
On 4/15/16, Jim Gillogly <scryer@gmail.com <mailto:scryer@gmail.com>> wrote:
Keith F. Lynch writes:
The longest words that remain words after being rot13'd are Chechen <-> Purpura.
Checking my unabridged, I see another cromulent pair at 7: nowhere <-> abjurer
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On 2016-04-15 09:25, Jim Gillogly wrote:
Keith F. Lynch writes:
The longest words that remain words after being rot13'd are Chechen <-> Purpura.
Checking my unabridged, I see another cromulent pair at 7: nowhere <-> abjurer
They also have the advantage of being usable for Scrabble.
Decades ago, using the 300000+ wordlist unabrd.dic [lib,doc?] residing (illicitly?) at Stanford AI, Robert Maas ran a search for pairs of words that determined each other under simple substitution (no fixed letters, i.e. no 1-cycles). Two that I remember were candlestand <-> whipmanship isoseismical <-> tumultuation --rwg What's Scrabbologically wrong with purpura? (Except it being the name of Edward Teller's secretary at LLNL.)
participants (5)
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Dan Asimov -
Fred Lunnon -
Jim Gillogly -
rwg -
Tom Rokicki