CMB power spectra and cosmological parameters from Planck PR4 with CamSpec

Posted by klaurent Cambridge

Kavli Affiliate: George Efstathiou | Summary:We present angular power spectra and cosmological parameter constraints derived from the Planck PR4 (NPIPE) maps of the Cosmic Microwave Background. NPIPE, released by the Planck Collaboration in 2020, is a new processing pipeline for producing calibrated frequency maps from Planck data. We have created new versions of the CamSpec […]


Continue.. CMB power spectra and cosmological parameters from Planck PR4 with CamSpec

Zero volume boundary for extension domains from Sobolev to $BV$

Posted by klaurent UCAS

Kavli Affiliate: Zheng Zhu | First 5 Authors: Tapio Rajala, Zheng Zhu, , , | Summary: In this note, we prove that the boundary of a $(W^{1, p}, BV)$-extension domain is of volume zero under the assumption that the domain $boz$ is $1$-fat at almost every $xinpartialboz$. Especially, the boundary of any planar $(W^{1, p}, […]


Continue.. Zero volume boundary for extension domains from Sobolev to $BV$