Results 91 to 100 of about 6,504,546 (373)
World-sheet dynamics of ZZ branes
, 2007 We show how non-compact space-time (ZZ branes) emerges as a limit of compact space-time (FZZT branes) for specific ratios between the square of the boundary cosmological constant and the bulk cosmological constant in the (2,2m-1) minimal model coupled to
Ambjørn, Jan +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.The study presents an efficient simulation approach for the polymer laser powder bed fusion process polymers process, validated with polyamide 12, polyamide 6, and polyetherketoneketone. It shows that inter layer time affects part density, with 90s yielding dense parts.
Claas Bierwisch +4 more
wiley +1 more source
COMPACTNESS OF THE SPACE OF LEFT ORDERS [PDF]
Journal of Knot Theory and Its Ramifications, 2007 A left order on a magma (e.g. semigroup) is a total order of its elements that is left invariant under the magma operation. A natural topology can be introduced on the set of all left orders of an arbitrary magma. We prove that this topological space is compact.
Mieczyslaw K. Dabkowski +4 more
openaire +2 more sources
Powder Metallurgy and Additive Manufacturing of High‐Nitrogen Alloyed FeCr(Si)N Stainless Steel
Advanced Engineering Materials, EarlyView.The alloying element Nitrogen enhances stainless steel strength, corrosion resistance, and stabilizes austenite. This study develops austenitic FeCr(Si)N steel production via powder metallurgy. Fe20Cr and Si3N4 are hot isostatically pressed, creating an austenitic microstructure.
Louis Becker +5 more
wiley +1 more source
Locally compact, $\omega_1$-compact spaces
, 2017 An $\omega_1$-compact space is a space in which every closed discrete subspace is countable. We give various general conditions under which a locally compact, $\omega_1$-compact space is $\sigma$-countably compact, i.e., the union of countably many ...
Nyikos, Peter, Zdomskyy, Lyubomyr
core
A normal countably compact not absolutely countably compact space
, 2001 We construct an example of a normal countably compact not absolutely countably compact space. We also prove that every hereditarily normal countably compact space is absolutely countably compact and suggest a method for construction of hereditarily ...
O. Pavlov
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley +1 more source
Net-Compact Hausdorff Topologies and Continuous Multi-Utility Representations for Closed Preorders
AxiomsIn this paper, we deal with continuous multi-utility representations for closed preorders. We introduce the definition of a net-compact topology, which generalizes the concept of a sequentially compact topology.
Gianni Bosi +2 more
doaj +1 more source
Some topological invariants and biorthogonal systems in Banach spaces [PDF]
, 2011 We consider topological invariants on compact spaces related to the sizes of discrete subspaces (spread), densities of subspaces, Lindelof degree of subspaces, irredundant families of clopen sets and others and look at the following associations between ...
Koszmider, Piotr
core
Topology and its Applications, 1992 AbstractThe property measure-compact fits between the Lindelöf and realcompact properties, i.e., Lindelöf implies measure-compact implies realcompact. Much of the research on measure-compact spaces centers on two themes: one, what properties measure-compactness shares with Lindelöf and realcompactness and two, the relationships between measure ...
openaire +2 more sources