𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Weak and strong extensions of differential operators

✍ Scribed by Lars Hörmander


Publisher
John Wiley and Sons
Year
1961
Tongue
English
Weight
424 KB
Volume
14
Category
Article
ISSN
0010-3640

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Maximal-Valued Extensions of Positive Op
✍ Zbigniew Lipecki 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 151 KB

We itre concerned with existence of extensions of positive linear operators be-I t v w i i ordered vector spaces which take maximal possible values on a given set of \wit ors. We eatablish a criterion (Theorem) which partially generalizes a similar twiilt of [2] about positive additive set functions

The Strength of Strong and Weak Ties
✍ Darcy Ashman; L. David Brown; Elizabeth Zwick 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 217 KB
Friedrichs extension and essential spect
✍ Tobias Kusche; Reinhard Mennicken; Manfred Möller 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 226 KB

## Abstract A general construction for the Friedrichs extension of symmetric semi‐bounded block operators with not necessarily bounded entries, acting in the product of Hilbert spaces has been given by Konstantinov and Mennicken via the form There the entry __A__ was assumed to be essentially sel