The phrase "an upper half" is correct and usable in written English.
It can be used to refer to the top portion of something, often in contexts like geometry, anatomy, or when discussing divisions of objects or areas.
Example: "In the diagram, the upper half represents the northern region of the country."
Alternatives: "the top portion" or "the upper section".
The eyes are on top of the head, and each is divided into two parts, an upper half for vision in air, and a lower half for vision in water; hence, the common name.
If the domain we consider is an upper half unit ball B +, the boundary condition is the following.
We apply formula (3.3) to the region D + ∖ D ε + ⊂ D +, where D ε + is an upper half sphere centered at P ′ of radius ε.
A survey of 650 IT business executives, out from CompTIA research this week found: "In 2009 only 9percentt of firms rated green IT as an upper half organizational priority.
The posterior medial frontal cortex can be divided functionally into two parts: an upper half including Brodman areas 8 and 9 and a lower half including part of the anterior cingulate cortex, Brodman areas 24 and 32 [40].
An upper half carries the identity, and a lower half triggers the environment.
where the integration path Γ ˜ consists of two segments [ 0, 1 − ε ] and [ 1 + ε, ∞ ) and a upper half circle joining them, as illustrated in Figure 1.
A linear elastic full-space composed of an upper half-space, a lower half-space and a layer of three different transversely isotropic materials under an internal load is considered.
The semigroup property will be very useful for converting equation (1.3) into the classical functional equation defined on an upper-half plane.
Just as some unearthed temples in east Java have a Hindu upper half and a Buddhist lower half, some early mosques had roofs in the shape of Hindu temples, said Timbul Haryono, a professor of archaeology at Gadjah Mada University here and an expert on Hinduism in Southeast Asia.
Leave it to Victoria's Secret to make a dolman sleeve dress that has a roomy upper half, but is still completely sexy.
