Results 31 to 40 of about 4,435 (183)
Geometric syzygies of elliptic normal curves and their secant varieties
, 2003 We show that the linear syzygy spaces of elliptic normal curves, their secant varieties and of bielliptic canonical curves are spanned by geometric syzygies.Comment: 31 Pages ...
Bothmer, Hans-Christian v., Hulek, Klaus
core +2 more sources
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
On some quiver determinantal varieties
Journal of Algebra, 2015 17 pages. V2. Final version to appear in J.
openaire +3 more sources
Some extremal contractions between smooth varieties arising from projective geometry
, 2004 We construct explicit examples of elementary extremal contractions, both birational and of fiber type, from smooth projective n-dimensional varieties, n\geq 4, onto smooth projective varieties, arising from classical projective geometry and defined over ...
Alzati, Alberto, Russo, Francesco
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FEBS Letters, EarlyView.Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman +2 more
wiley +1 more source
On higher secant varieties of rational normal scrolls
Le Matematiche, 1996 In this paper we study the higher secant varieties of rational normal scrolls, in particular we give them as determinantal varieties. From this we can obtain, in some cases, the sequence of secant defects, generalizing to a class of varieties and to ...
Pietro De Poi
doaj
Journal of High Energy PhysicsThe CEGM formalism offers a general framework for scattering amplitudes, which rests on Grassmannians, moduli spaces and tropical geometry. The physical implications of this generalization are still to be understood.
Bruno Giménez Umbert, Bernd Sturmfels
doaj +1 more source
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source
Singular Loci of Ladder Determinantal Varieties and Schubert Varieties
Journal of Algebra, 2000 The authors give an interpretation of ``ladder determinantal varieties'' as ``opposite cells'' in a suitable Schubert variety. It is then possible to determine the singular loci of these varieties. This leads to a conjecture on the irreducible components of the singular locus of a Schubert variety in the flag variety.
Gonciulea, N., Lakshmibai, V.
openaire +2 more sources