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going
In commutative algebra, a branch of mathematics, going up and going down are terms which refer to certain properties of chains of prime ideals in integral extensions.
The phrase going up refers to the case when a chain can be extended by "upward inclusion", while going down refers to the case when a chain can be extended by "downward inclusion".
The major results are the Cohen–Seidenberg theorems, which were proved by Irvin S. Cohen and Abraham Seidenberg. These are known as the going-up and going-down theorems.
Hi, I've not posted for a while, not a plumber, but a keen DIYer who likes to try and do things without bodging if I can. Basically I'm wanting to create a cloakroom toilet in our utility room, theres already hot and cold feed so thats one job made slightly easier, thankfully. The problem I'm...
I recently read a post / comment whereby there was a recommendation that if you are away from your home more than 24 hours, then you should turn the water off to avoid potential catastrophic damage. When I go away I have always tended to turn ours off, that's typically anything from a couple of...
Have a problem with an oil fired AGA conversion
Has been no problem for 5 years, now goes out 12 to 36 hours after lighting, have checked fire valve, and have installed seperate line from tank to feed AGA
went for 3 weeks one time, then went out due high winds. Has now started same pattern
Help...
bit of an odd one. UFH been working fine for about a year or two now.
today the pipes going to it before the zone valve are stone cold.
its a very basic system with Hive thermostatic valves controlling the rads upstairs and the zone valve downstairs.
Could the pipe be blocked?
Morning Guys,
I have a Worcester 230 Combi in a rental property that is going to overheat lockout after a couple of minutes on DHW, no issue when on CH but if DHW is called for when heating is on same fault occurs.
System is clean as always had inhibitor so unlikely to be a blocked heat...
Hi,
After years of using a pumped electric shower (Triton t80 pumped), it's now dying and I'd like to replace it with a 'normal' mixer shower running off the vented hot water tank as this is now largely heated by solar PV . When we first moved to the house there was a shower head coming off the...
Hi,
I’ve been in the industry for 10 years now working for a firm, I can do most things gas ,oil installs, repairs ,servicing and plumbing. I’m currently taking home 50k and about 6k in scarp.
Been thinking hard about going out on my own to better myself and income. Could I really be earning...
I need to connect a 1"½ kitchen waste pipe to a drain but it will have to go at a slight uphill.
I have never had to deal with this before and I like advice on what best to use and model. I am aware that a macerator pump can be used?
any help welcome t. T
So been trying to search this for some time and finding mixed results, I have 10mm JD Speed fit piping coming out the wall and hoping to use it on the original TRVs, things that keep popping up are
these JG stem reducers, but doesn't seem right that the value would go onto the end? wouldn't...
Bit of a long video here, but I'm really hoping someone can help. We clearly need to get someone in to fix the leak, but meanwhile I'm concerned where all the water is going to.
There is no water damage in the surrounding area. Walls and floor seem perfectly fine.
I can't work out where the...
Can anyone please help. We have shower issues and have had for about 2 years. We are in a farmhouse. So before hand, we would turn on our Trevi shower, it would go warm, not great pressure through the showerhead though, somewhere between normal and dripping! After a few minutes, the water flow...
My shower keeps going cold then stays like that for a couple of seconds then goes back to hot & this will keep happening the whole time while showering.
It was happening on my previous shower mixer which I then changed to the Mira one I now have & it stopped doing it for a while but now it’s...
Hello everyone.
Bought a new dishwasher, which fits in the space of the old one horizontally but it doesn't go back far enough. It's very close to being flush but not enough. The difference is around 1.5cm.
Can someone please tell me how to get this fitting properly?
Help! My plumber has just left and has pulled off quite a chunk of my wall when removing my bath. I said I would tile tonight without looking at his work. He has left this hole. Am I unreasonable to ask him to come back and remove the bath so I can repair the wall?
Hey guys
My wife noticed water on the floor in our basement. What I can see is that the elbow is cracked where a 1.5" down pipe enters a 4" pipe that goes beneath the basement concrete floor.
My thought is that I have to break up some concrete to replace the 4" pipe/clean out and reattached...
I am currently going through a career change to be a plumbing and heating engineer. I have completed a year long plumbing and heating diploma level 2 at college and have signed up with a assessor at the college. It has been hard to find a placement as most plumbers either don't want the...
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