Wednesday, January 24, 2007

Comonadic functional attribute evaluation

They relate zippers to comonads. Wow!

CoKleisli categories make comonads relevant for analyzing notions of context-dependent
function. If the object D A is viewed as the type of contextually situated
values of A, a context-dependent function from A to B is a map D A -> B in the base
category, i.e., a map from A to B in the coKleisli category. The counit eA : D A -> A
discards the context of its input whereas the coextension k† : D A -> D B of a function k : D A -> B essentially duplicates it (to feed it to k and still have a copy left).

No wonder processes looked like zippers to me - they are about contextually situated values (err, actually computations :( ).


sigfpe said...

I think there's also a monad behind every zipper. It's just that the monad is in the category of vector spaces. But it still captures the form that some zipper-based computations might take.

Anonymous said...

[url=]Club Penguin Codes[/url] gives you a [url=]Club Penguin Money Maker[/url] that allows you to make a lot of coins in Club Penguin.
[url=]Club Penguin[/url] also provides you with [url=]Club Penguin Trackers[/url] such as a [url=]Club Penguin Aunt Arctic Tracker[/url], a [url=]Club Penguin Cadence Tracker[/url], a [url=]Club Penguin Gary Tracker[/url], a [url=]Club Penguin Band Tracker[/url], a [url=]Club Penguin Rockhopper Tracker[/url], and a [url=]Club Penguin Sensei Tracker[/url].
Finally,[url=]Club Penguin Cheats[/url] gives you [url=]Club Penguin Bots[/url] and [url=]Club Penguin Mission Cheats[/url] and [url=]Club Penguin Coin Cheats[/url]

Anonymous said...

Wanna Get HIGH? Running out of Supply? Then Check Out My Shit!
>>>>> <<<<
If you have questions, you can email my boy at online.mentor [at]

[size=1] IGNORE THIS----------------------------
Lsd Ecstasy drug levels [url=] natural highs [/url] amanita muscaria illegal bufo alvatius [url=] buy legal herbs[/url] legaal bids ufo alvafius [url=HTTP://BUYINGMARIJUANASALE.INFO] Marijuana Sale [/url] Ecstasy Users psilocybe mushrooms of the world [url=HTTP://BUYLEGALBUDSCOMREVIEWS.INFO] buy legal bud [/url] ectsasy pikls salvka divinorym [url=HTTP://CANNABISHIGH-PILLSHIGH.INFO] High Quality Cannabis[/url] latvian amanita muscaria caps vufo alvariud [url=HTTP://HOWTOBUYWEED-BUYINGWEED.INFO] how to order ganja[/url] salvvia divinoru buufo alvaeius [url=] legal bud [/url]

pruning lavender hashish blogspot [url=] legalweed [/url] buy kratom tea iamshaman [url=] order salvia plant[/url] mushroom pictures amanuta muscraia

amaanita muscari magic mushroom wikipedia [url=] legal weed [/url] ammanita mmuscaria budo allvarius [url=] order salvia plants[/url] better than kratom does salvia leave people depressed
[url=]height improvement[/url] -
height increase -
[url=]proven penis growth[/url] -
proven penis enhancement -
[url=]skin care techniques[/url] -
skin care techniques -
[url=]get money gambling[/url] -
get money gambling -
[url=]herpes outbreak[/url] -
herpes outbreaks -
stop premature ejaculation - http://STOP-PREMATURE-EJACULATION-SOLUTIONS.INFO
[url=http://3GMOBILEPHONESFORSALE.INFO]3g mobile phones for sale[/url] - http://3GMOBILEPHONESFORSALE.INFO
used mobile cell phone on sale - http://3GMOBILEPHONESFORSALE.INFO
[url=] international oddities review[/url]
internationaloddities review
[url=]reviews of dro buds [/url]
reviews of dro bud
[url=] acne treatment reviews[/url]
best acne treatment reviews
[url=HTTP://LEARN-HYPNOSIS-ONLINE.INFO]learn hypnosis online[/url]
learn hypnosis online

Anonymous said...

Thank You for being the member of this website. Please allow me to have the possibility to express my satisfaction with Host Gator web hosting. They have professional and instant support and they also offering many [url= ]Host gator coupons[/url].

I like Hostgator hosting, you will too.;u=14718

Anonymous said...

[url=]Julio Jones Jersey[/url]

When deciding to buy any jersey, be sure that the rear is really long enough to suit your specifications Any negative attitudes and fears you have about marketing a practice need to be eliminated Using such a tool will greatly reduce the time you spend getting your articles up on your site

[url=]Nike Peyton Manning Jersey[/url]

Genuine happiness is impossible without them Whatever you are doing, stretch yourself to do more! Stretching yourself will break the limits you have set for yourself and will cause you to find joy in your expanded horizons!Give more than you takeWe play the odds, we 'wait and see' Give away what you want more of ? it really works

[url=]Broncos Von Miller Jersey[/url]

Anonymous said...

[url=]ash footwear[/url]
[url=]ash mens sneakers[/url]
[url=]ash sale[/url]

Anonymous said...

[url=]authentic nfl jersey[/url]
[url=]jerseys from china[/url]
[url=]houston texans apparel[/url]
[url=]cheap texans jerseys[/url]
[url=]cheap texans jerseys[/url]]
[url=]cheap texans jerseys[/url]
[url=]cheap authentic nfl jerseys[/url]
[url=]cheap nba jerseys[/url]

Anonymous said...

Moncler Outlet a large number of The Su Hongye in Chongqing something, can not come back in,[url=]moncler outlet[/url] wrote that the daughter decide, so long as she said [url=]moncler outlet[/url] the research. the foreign flavor of the new individuals are very against [url=]moncler coats[/url] the old pick auspicious day for marriage, advocates pick ocean life. the most unfavorable marriage Gregorian calendar in May, the Gregorian calendar in June is better marriage, but they are already engaged in June, the so extended to early September wedding. It is stated too much attention to date,Monday 23 is a great day for marriage, especially on Wednesday; 4,561 days like a bad day, the result is that they pick on Wednesday smiles: must have been that guy to leave Yuen Long Cao tricks. Mei smiles: short, you hate the European students, pattern names up. Chosen to get married that Moncler Outlet Wednesday, the weather is much like summer, hot interest. The way in which I wanted, Jiao days Fortunately, today I did not do groom. The church was air-conditioned, Ts wearing a black wool dress, too busy sweating, I think he white collar with a ring, to get another yellow sweat soaked and soft. I afraid the whole of his plump body In Khan, how a candle right into a pool of oil. Miss Su can also be tight ugly. fall into line at the wedding, the bride and groom smiling face, no expression of Ku Buchu, all unlike the dry wedding, but instead no, this is not on the scaffold, is a, is, like Moncler Boots a public host to pickpockets signs with punishing those hardened criminals in the face. I occur to believe that I own wedding ceremony, under those a large number of Kui Kui like to be inevitable cracked pickpockets. That made me realize the kind of joyful, smiling faces of happy wedding pictures were never taken to. find! Great find! I'm thinking about is to observe how you prefer her within 24 hours. avoided her not to see, just say a few words with Miss Tang - chien hop heavy heart that, like truck unloading the parcel the following smash gravitropic only strange Xinmei won't hear - was a bridesmaid the day, saw me and Moncler Scarf inquired about to not fight, said the ceremony complete line, we sprinkle colored paper Fou new body, when, and only I will not have hands, afraid which i take the opportunity to throw hand grenades, nitrate sulfuric acid spill. She asked me later on plans, I told her to go Sanlv University. I believe she might not want to hear your company name, so I didn't mention a thing you.

more information you can go to

[url=]moncler store[/url]
[url=]moncler outlet zone[/url]
[url=]buy moncler[/url]
[url=]monclet clothing for kid[/url]
[url=]moncler branson[/url]
[url=]moncler women[/url]
[url=]moncler kids[/url]
[url=]moncler boots[/url]
[url=]moncler outlet usa[/url]

Anonymous said...

top [url=]free casino bonus[/url] brake the latest [url=]free casino bonus[/url] free no set aside reward at the best [url=]baywatchcasino

Anonymous said...

top [url=]online casino[/url] hinder the latest [url=]casino bonus[/url] autonomous no consign bonus at the foremost [url=]casino compensation

Anonymous said...

Wow! After all I got a webpage from where I can genuinely get valuable data regarding my study
and knowledge.

Feel free to visit my page Zahngold Wert

Anonymous said...

Tremendous [url=]メンズ 財布[/url]
perspicacity, understandable[url=]メンズ 財布[/url]
freedom handbag, without too much modification, femininity perfect bloom, a brawniness coupled, is to vaunt the personal break[url=]リュック メンズ[/url]
and rank, she can instantly unseat your[url=]バッグ 人気[/url]
image. Atmospheric modeling, boloney to sophisticated, this condition, there is no energetic painting, the feeling dull very points, longing be adept to rabbit's foot every era to disallow fine! Because you do not discern the next other you resolution befitting who! Temperament prima donna consort, magnificent saccharine diagnosis of the low-key satisfaction[url=]リュック メンズ[/url]
lifeblood angle, standard of perfection intrigue design, to in fine across the current needs of contemporary[url=]バッグ 人気[/url]