table de dissection - ορισμός. Τι είναι το table de dissection
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Τι (ποιος) είναι table de dissection - ορισμός

THE PROBLEM OF PARTITIONING A GIVEN SHAPE INTO PIECES THAT CAN BE REARRANGED TO FORM A SECOND GIVEN SHAPE
Shape dissection; Dissection (geometry); Dissection (rearrangement)

Dissection (medical)         
TEAR WITHIN THE WALL OF A BLOOD VESSEL
Arterial dissection; Aneurysm, dissecting; Dissecting aneurysm; Dissection (medical)
A dissection is a tear within the wall of a blood vessel, which allows blood to separate the wall layers. Usually, a dissection is an arterial wall dissection, but rarely it may be a vein wall dissection (VWD).
Vertebral artery dissection         
  • Magnetic resonance angiogram of the neck vessels in a person with Ehlers-Danlos syndrome type IV; it shows a dissection of the left internal carotid artery, dissection of both vertebral arteries in their V1 and V2 segments and a dissection of the middle and distal third of the right subclavian artery. Such striking episodes of dissection are typical for this "vascular" subtype of Ehlers-Danlos syndrome.
  • Aspirin (tablets pictured) is commonly used after stroke. In vertebral artery dissection it appears as effective as anticoagulation with warfarin.
  • A reconstruction of the vertebral arteries from a CT scan, seen from the front. From the bottom, V1 is from the subclavian artery to the foramina, V2 is from the foramina to the second vertebra, V3 is between the foramina until entry into the skull, and V4 is inside the skull embedded in the [[dura mater]]. They merge into the basilar artery, which then divides into the [[posterior cerebral artery]].
TRAUMATIC OR NONTRAUMATIC VERTEBRAL ARTERY RUPTURE
Vertebral dissection; Dissection of vertebral artery; Vertebrobasilar artery stroke; VA dissection
Vertebral artery dissection (VAD) is a flap-like tear of the inner lining of the vertebral artery, which is located in the neck and supplies blood to the brain. After the tear, blood enters the arterial wall and forms a blood clot, thickening the artery wall and often impeding blood flow.
Carotid artery dissection         
HUMAN DISEASE
Carotid artery, internal, dissection; Carotid dissection; Dissection of carotid artery; ICA dissection
Carotid artery dissection is a separation of the layers of the artery wall supplying oxygen-bearing blood to the head and brain and is the most common cause of stroke in young adults. (Dissection is a blister-like de-lamination between the outer and inner walls of a blood vessel, generally originating with a partial leak in the inner lining.

Βικιπαίδεια

Dissection problem

In geometry, a dissection problem is the problem of partitioning a geometric figure (such as a polytope or ball) into smaller pieces that may be rearranged into a new figure of equal content. In this context, the partitioning is called simply a dissection (of one polytope into another). It is usually required that the dissection use only a finite number of pieces. Additionally, to avoid set-theoretic issues related to the Banach–Tarski paradox and Tarski's circle-squaring problem, the pieces are typically required to be well-behaved. For instance, they may be restricted to being the closures of disjoint open sets.

The Bolyai–Gerwien theorem states that any polygon may be dissected into any other polygon of the same area, using interior-disjoint polygonal pieces. It is not true, however, that any polyhedron has a dissection into any other polyhedron of the same volume using polyhedral pieces (see Dehn invariant). This process is possible, however, for any two honeycombs (such as cube) in three dimension and any two zonohedra of equal volume (in any dimension).

A dissection into triangles of equal area is called an equidissection. Most polygons cannot be equidissected, and those that can often have restrictions on the possible numbers of triangles. For example, Monsky's theorem states that there is no odd equidissection of a square.