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minimum

In mathematical analysis, the maxima and minima (the respective plurals of maximum and minimum) of a function, known collectively as extrema (the plural of extremum), are the largest and smallest value of the function, either within a given range (the local or relative extrema), or on the entire domain (the global or absolute extrema). Pierre de Fermat was one of the first mathematicians to propose a general technique, adequality, for finding the maxima and minima of functions.
As defined in set theory, the maximum and minimum of a set are the greatest and least elements in the set, respectively. Unbounded infinite sets, such as the set of real numbers, have no minimum or maximum.

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  1. mvrobb

    Minimum Distances from Ceiling

    My Clerk of Works pal has a cotractor installing new Domestic Hot Water Storage Tanks in flats. Thety are positioned above the Hot Water Cylinder but are only about 150mm from the ceiling tut tut. I have mentioned that im sure its dictated as minimum 400mm from top of tank to allow for...
  2. V

    Water Softeners, I'm not Impressed

    I accept that water softeners do a marvelous job keeping limescale, scum etc at bay. So if you are in a hard water area, fitting a water softener will give you lovely enjoyable showers. But, there is that thingy called REGENERATION. During regeneration, a massive 12 minutes goes by while...
  3. R

    breakdown engineers GU, SL, RG, TW, KT, SW

    Are you Gas Qualified? Enthusiastic? Customer facing and confident in your abilities? We are and thats why we are looking for top quality heating engineers either PAYE or 20%. Own tools essential and non sign written van desirable but not essential. Succesful canditates will be required to...
  4. G

    Minimum distance between expansion tank and top radiator?

    Hi, Our house has a conventional central heating system. The boiler heats the water up and feeds the radiators and a hot water cylinder. There's an expansion tank in the loft. Since we had our bathroom refitted 4-5 years ago, we've been experiencing issues with our towel radiator. We...
  5. Sid Viscous

    300mm?

    Refresh my memory guys, min. distance from boiler to electric meter - I've got 300mm in my head, that right?
  6. S

    pricing up for little job

    And it is a small job too!! Iv been asked to fit a ISO on a electric power shower the 15mm pipe runs up too the loft on too the header tanks??? how do you go about pricing somthing so small? the part is £2+??????labour=????I DONT KNOW my plans are to just turn off mains and cut pipe in loft...
  7. D

    Minimum Water Pressure / Flow Rate

    Iv been called back to the same property several times in the last 6 for the same problem. The tenant is complaining her water pressure is very poor. So this time i decided to do a proper test and found a Pressure of just under 2bar and a flow rate on the kitchen cold tap of 15Litres per minute...
  8. N

    28i Junior modulating in minimum mode

    Hi all, Was wondering if anyone had come across this before or might know what the problem is. Trying to adjust the air gas ratio on a 28i junior. Put it in service mode. Turn the dial to maximum. Boiler goes to full output. Adjust the valve to get the reading I need. All good. Then turn down...
  9. P

    Minimum water pressure, OFWAT

    I have seen on internet that OFWAT states the minimum water pressure requirement should not be less than 0.7 bar. what system would run efficiently at this preesure? Regards Pete
  10. I

    How much do you/should you pay apprentices?

    As per title really, I have been thinking about getting an apprentice but was interested to hear what everyone pays for the privilege ! Also what do you do with them during the quiter summer months? Cheers,:army:
  11. D

    Building new bathrooms, minimum drainage fall requirements

    Hello, I am currently making some plans for new bathrooms, this is my first time doing this and I need to know what are the minimum measurements for required drainage falls for toilets and showers. Any and all help would be greatly appreciated.
  12. M

    NVQ 2 assessments on site

    Hi there i need to book an on site assessment to get mt nvq 2 but dont know where to start looking. I have my technical certificate level 2 already just need to turn it into an NVQ. If anyone has any advice it would be greatly appreciated. I have work lined up that I think will satisfy the...
  13. L

    its xmas whats the minimum callout to be?

    Being cheeky here but I was wondering who is the most expensive callout over xmas. Got to be honest to work: but if your interested 2 years back i did 3 over boxing day, as it was ruined anyhow picking up daughter fm airport so bimbled around in the landy when I got home, to go and resolve 3...
  14. P

    Minimum price for alcohol - good idea?

    Do you think having a minimum price for alcohol is a good idea? Even if it has the desired effect, which many people doubt, is using the price mechanism as a way of controlling people's behaviour a healthy way to run society?
  15. C

    Vokera linea 24 gas valve

    Can anyone help me out with fitting a new gas valve to a linea 24 LPG. Does it require a jumper tag to set min and maximum DHW and minimum CH?
  16. P

    Living wage v minimum wage

    Do you think people should be paid a living wage rather than the minimum wage whenever a company can afford it? Minimum wage for 21 year-olds and over is £6.19 p.h. Living wage is reckoned to be around £8.00 p.h.
  17. J

    Worcester Bosch 15Ri Minimum Flow Rate & Auto bypass

    Hi, I have the worcester bosch 15Ri boiler already installed. I have a salus bpv100 auto bypass, multihead g pump on speed 2. Does anyone know the minimum flow rate the boiler requires (I can't find it in its manual, unless I missed it) so I can adjust the bypass valve appropriately. Thanks...
  18. M

    Boiler flue distances

    Hi guys, never come across this before, wondered if any of you have any knowledge of it. Il call gas safe if not. I've been to price up a boiler, the customers existing flue comes out quite close to an outside wall hung lantern that sticks out from the wall light, (hope you understand what i...
  19. M

    Is it time to limit the for sale section to posters with a minimum post count?

    I've just seen a post pop up in the for sale and wanted from a new member. Odds on they've only registered to try and sell. Doesn't strike me as being in the spirit of the site to just pop up and try and flog stuff, that's what e-bay is for. A photography forum I'm a member of limits access to...
  20. M

    Catchment spaces volumes?

    When you are checking the catchment space for fires, how do you convert the volume in mm to decimetres? My viper does not seem to mention it. Or if there is 75mm or 250mm from the bottom of the flue spigot, do you still need to work out how many decimtres it is? Cheers fellers
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