Weaving frames in separable Hilbert spaces have been recently introduced by Bemrose et al. to deal with some problems distributed signal processing and wireless sensor networks. In this paper, we study the notion of excess for woven prove that any two a space are same excess. We also show every frame large class duals is provided its redundant elements small enough norm. Also, try transfer prop...

We have surveyed the 30 Myr-old cluster NGC 2547 for planetary debris disks using Spitzer. At 4.5–8 μm we are sensitive to the photospheric level down to mid-M stars (0.2 M⊙) and at 24 μm to early-G stars (1.2 M⊙). We find only two to four stars with excesses at 8 μm out of ∼400–500 cluster members, resulting in an excess fraction .1% at this wavelength. By contrast, the excess fraction at 24 μ...

This paper presents two new combinatorial algorithms for the generalized circulation problem. After an initial step in which all flow-generating cycles are canceled and excesses are created, both algorithms bring these excesses to the sink via highest-gain augmenting paths. Scaling is applied to the fixed amount of flow that the algorithms attempt to send to the sink, and both node and arc exce...

This paper presents two new combinatorial algorithms for the generalized circulation problem. After an initial step in which all ow-generating cycles are canceled and excesses are created, both algorithms bring these excesses to the sink via highest-gain augmenting paths. Scaling is applied to the xed amount of ow that the algorithms attempt to send to the sink, and both node and arc excesses a...

Context. Extended circumstellar emission has been detected within a few 100 milli-arcsec around >∼10% of nearby main sequence stars using near-infrared interferometry. Follow-up observations using other techniques, should they yield similar results or non-detections, can provide strong constraints on the origin of the emission. They can also reveal the variability of the phenomenon. Aims. We ai...