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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.
Hello,
I currently work at a factory as an assistant engineer/ water manager, I am thinking of start working part-time as self-employed and if I see that I can build a reputation then I'll quit from the factory. I had my own plumbing/airconditioning company abroad for 15 years and then I moved...
As above really what’s the max length a soil stack can be run horizontally, it will be feeding a toilet and a basin . Getting confused by the tables below as table 2 says 15m and table 1 says 6m ? Can anyone help?
Got called to sort out a Mira 415 going hot and cold intermittantly. First off checked filters, none in it and water at basin is hot. Changed cartridge in shower valve and its still doing the same thing according to the customer.
System is mains pressure via a Worcester HiFlow, customer seems to...
Wondering if I have a faulty pump?
On variable speed or fixed speed settings it will only go to 4m.
If I set it to max variable, 6m flashes and then goes to 4m
Morning all,
Can anyone shed some light on said boiler? It’s going off on unexpectedly. This is only the second time it’s done so in 3 weeks, boiler doesn’t go in to lockout. The first time was just after having heating oil tank topped up, but far as I can see oil is flowing freely to pump. The...
Hi Everyone i just installed to plumber main water pipe water filter system. But right now pressure goes down more than %60 and hot water not reach to shower.
What is the solutions for it except take out of course :)
Thanks
Hey everyone. Hope you all had a good Christmas/New Years.
I have to turn self-employed due to financial reasons on my bosses part.
It kind of suits me to be honest because even though I've been working for him I have missed out on a lot of days over the years due to there being little work...
Hi everyone, as the title says I'm looking at going self employed, I'm 31 and worked for 2 companies over the past 14 years so feel it's time for me to take control and be my own boss.
Naturally I'm little nervous about what to expect and my biggest worry is keeping the work coming in. Most...
I must have supplements, I can't wait to get up in a morning to have a bowl full of supplements and milk, for my lunch have 3 jars of supplements between 2 dry bread slices and for tea hot mashed and roast supplements followed by supplements and custard.
For my christmas presents I will buy...
Hi, new member but would appreciate any help, I am a DIYer but generally consider myself competent enough to do basic plumbing so am going to put in a Magnaclean Professional 2.
I want to ensure I put it on the return as I am also going to be borrowing a Magnacleanse for an initial deep clean...
Hi, I was talking to John this weekend and he told me from next year he’s putting the gas safe registration prices up. For instance for, non web registrations is going to be £280, paper registrations uses up more man hours. The main registrations for new gas safe applicants will be £420 for 1...
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My 14 year old Worcester Greenstar 30 HE combi feeds my bathroom shower and the last two days when showering the water from the shower has gone cold for about 4 seconds, then heated up. Soon afterwards it again goes cold at the shower end for a few seconds, then heats up again, and the cycle...
Hi, non combi system and 7 radiators. 1 radiator swapped with system drained. All back on but no water going to any radiator. Any ideas? The little tank has water in it and stays level even after the drain.
Does anyone know of any plumbing jobs or companies taking on round the Windsor or heathrow area, willing to be a plumbers mate or trainee as i want to get back into it. cheers guys
Can anyone shed a light as to why a Worcester Bosch 24i junior dhw sets off hot then after about 2 minutes goes cold then heats up but only slightly. Occurs at all taps and shower.
I was hoping for some clarification, I've just moved into our first home, and there a lot I want to do with it. One job is to install a wet room/small corner shower. I am currently employed as a general maintenance guy, and so a lot of plumbing at work. I'm confident I can do all the work...
Hello, We have a heatline C24 boiler & when the heating is on the pressure gauge is going up into the red to as high as 3.5bar, When the heating is off it sits at around 1.3-1.5bar.
I turned it off & waited a few hours for it to settle & drained some water via a radiator bleed valve to relieve...
Guys first time in here I got anew boiler fitted about 7 months ago with aforementioned stat boiler all working well but about a month ago I got back from hols n it started to fire up itself no flame indicated on remote but receiver lite green as if getting a signal I reset the boiler & stat...
Hi all,
For some reason my shower will not stay hot, it is hot for about 30s and then will go cold for about 10s and repeats this.
I have read forums and people say it could be the heat exchanger needing a clean or a sticky diverter valve but the taps for the sinks etc aren't doing this so...
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