pre-order


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pre-order

(graph theory)

pre-order

(theory)
A relation R is a pre-order if it is reflexive (x R x) and transitive (x R y R z => x R z). If it is also antisymmetric (x R y R x => x = y) then it is a partial ordering.
References in periodicals archive ?
This Pre-order will prove to be a success, not only because of the great device but also because of the pre-order special conditions.
Epic six-film bundle begins pre-order April 6th and available Friday, April 10th
And several days back, the company did open its pre-order window for the first time to anybody that would like to purchase this incredible handset.
Customers were able to pre-order the devices online via Ooredoo's eShop since midnight last Friday.
Due to high demand, it would be wise to place an order now, not only to avoid disappointment; Goldgenie are also making an enticing exclusive offer to early-bird customers who pre-order the iPhone 6 - a guarantee that for them, it will remain the same price as their current customised iPhone 5s range, irrespective of how much the price of the phone increases by.
Hardcore gamers will be able to pre-order Microsoft's Xbox One console for a limited period from July 16 to August 28.
TEHRAN (FNA)- The Last of Us Remastered is now available to pre-order from the European PlayStation Store for Au39.
Inflight Service is to launch its specialised pre-order concept to the Dutch airline market after striking a contract with TUI Airlines Nederland, operating as Arke.
Well you'd better get a move on and pre-order a Day One Edition of the new console, after Microsoft confirmed that it was only this version, not all standard console pre-orders that would receive the free game.
As an added bonus, all pre-order purchasers will also receive a free, exclusive, limited-edition T-shirt.
Apple has announced thatiPhone 5 pre-orders topped the 2 million markin just 24 hours, which the company says more than doubles thelast iPhone pre-order record setby the iPhone 4S.
The first 24 hours alone saw thousands placing their pre-order at Carphone Warehouse.