SECOND ANNOUNCEMENT ... Algebras, Lattices, Varieties - A Conference in Honor of Walter Taylor Boulder, Colorado August 15-18, 2004 We take great pleasure in...
226
Michael K. Kinyon
mkkinyon
Jun 24, 2004 5:10 pm
Does the categorical notion of center due (I think) to Barr and Huq (see references below) coincide with the universal algebra notion of center as adumbrated...
227
Jennifer Hyndman
hyndman0316
Jul 5, 2004 6:48 pm
(My apologies if you receive this message twice.) Dear Colleagues, This is a reminder that the deadline for submitting abstracts for the conference Algebras,...
228
emery diek
freredejesus
Aug 26, 2004 8:30 pm
my problems in exercices I show that a finite algebra A is demi-semi-primal iff every n-ary function , n greater (or equal to) than 1 on A...
229
Jiri Adamek
adamek@...
Oct 8, 2004 1:53 pm
Where do I find a proof that every subsemigroup of the additive group of all natural numbers is finitely generated? ...
230
Mckenzie, Ralph N
mckenzie@...
Oct 8, 2004 2:53 pm
Hi, I guess that some elementary number theory texts have this; I'm not sure. I published a paper in JSL around 1971 (vol. 36) showing that the first order...
231
Boris M Schein
bschein@...
Oct 8, 2004 3:33 pm
This fact goes back to Frobenius (and Weierstrass). The problem is to recall who and where mentioned it in print. This is more difficult than just proving the...
232
A. Mani
a_mani_amc
Oct 8, 2004 9:31 pm
... You can also prove it using partial algebras. Starting from relative partial subsemigroups of N. The main construction is in a paper due to Mikenberg, I...
233
Vaclav Koubek
koubek@...
Oct 11, 2004 9:02 am
Obavam se Jirko, ze s nalezenim tohoto faktu budes mit problemy. Je to folklor, takze se da ocekavat v nejake zakladni ucebnici algebry. Ale moc bych neveril...
234
henriksen@...
Oct 12, 2004 4:23 am
In their expository paper "On the subsemigroups of N" in Mathematics Magazine 48 (1975), 225-227, W. Sit and M. Siu showed that all such are finitely...
235
Jiri Adamek
adamek@...
Oct 12, 2004 9:18 am
Ahoj Venco, no to je legrace, zespolu komunikujeme takhle!!! Dostal jsem par odpovedi, jako ze uz to vedel Weierstrass..., ale kupodivu i konkretni clanek, kde...
236
Pavel Jiranek
payinek
Oct 12, 2004 10:21 am
Ahoj Venco a Jirko. To je fakt legrace :-)). P...
237
mhebert
mhebert@...
Oct 12, 2004 10:55 am
Dear all, I am rather curious about Jirka Adamek's Subsemigroup question. Can we have a translation of the essence of what was exchanged in the previous...
238
henriksen@...
Oct 12, 2004 3:39 pm
The question posed by Adamek is appended. My response is the only one that gives an explicit reference, The others describe it as easy to show or give...
239
henriksen@...
Oct 12, 2004 3:43 pm
Here is the copy of J. Adamek's question that I forgot to append. MH Date: Fri, 08 Oct 2004 15:52:56 +0200 (CEST) From: Jiri Adamek <adamek@...> ...
240
Boris M Schein
bschein@...
Oct 12, 2004 10:16 pm
... Sorry, my previous reaction was too vague (laziness, common laziness...) There was a reference to related results (provided by Melvin Henriksen). The Redei...
241
Boris M Schein
bschein@...
Oct 13, 2004 3:28 pm
A comment to my previous comments. I asked a friend who was interested in the subsemigroups of free commutative monoids. He is far from home and cannot look up...
242
Walter Taylor
wtaylor@...
Nov 3, 2004 4:33 am
Here is a question that Stephen Bloom asked me to place on this list. You may reply to him at bloom@.... Are there charaterization theorems for...
243
A. Mani
a_mani_amc
Nov 3, 2004 9:39 pm
... There is something missing in the definition (links please). What is v ? Apparently v is an interpretation on a groupoid of the original terms. A. Mani ...
244
Vaughan Pratt
pratt@...
Nov 4, 2004 7:20 am
... v = var. All Steve is saying here is that an equation is super-regular when (a) the two sides have the same "fringe," meaning the same list of variables...
245
Vaughan Pratt
pratt@...
Nov 4, 2004 10:02 am
I just noticed that my last sentence, ... conflicts with Steve's no-repetition rule. The spirit of that restriction might survive under the condition that...
246
Matt Insall
mattinsall
Nov 4, 2004 12:28 pm
A Mani wrote: ``There is something missing in the definition (links please). What is v ? Apparently v is an interpretation on a groupoid of the original terms....
247
Stephen Bloom
bloom_slb
Nov 4, 2004 3:26 pm
Matt is correct. Mani wrote: ``There is something missing in the definition (links please). What is v ? Apparently v is an interpretation on a groupoid of the...
248
Walter Taylor
wtaylor@...
Nov 4, 2004 3:28 pm
(actually not Walter's definition. I merely copied what was sent to me.) wt...
249
Japheth Wood
japhethwood
Nov 12, 2004 2:33 am
Subject: 2006 AMS/MAA Special Session Greetings one and all, We (John Snow and Japheth Wood) are considering organizing a special session at the January...
250
freredejesus
Nov 18, 2004 10:01 am
i want to have more i,formation on homogeonous algebra and strongly homogeonous algebra...
251
Srinivasa Rao Tanniru
tsnivas
Nov 18, 2004 10:44 am
Every ideal of a boolean algebra B is a sublattice of B. Is it a boolean sub algebra of B.If not Can you direct me to give an exaple in this case. with regds ...
252
Steve Vickers
s.j.vickers@...
Nov 18, 2004 11:05 am
... Hint: The ideal is a sublattice if you define "lattice" in a weak sense of having binary meets and joins. Is it still a sublattice if you define "lattice"...
253
Matt Insall
mattinsall
Nov 18, 2004 3:20 pm
Freredejesus asked about homogeneous algebras. I had never heard of them before (although it seems I probably should have...). They do not turn out to be...
254
Matt Insall
mattinsall
Nov 18, 2004 3:31 pm
Srinivasa Rao Tanniru asked if every ideal of a boolean algebra is a boolean subalgebra. The answer is very strongly no. Consider the ideals of the power set...
