Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Journals
  3. Canadian Mathematical Bulletin
  4. Volume 37
Journal Home
Refine listing

Refine listing

Access:
Publication date:

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×
< Back to all issues

Volume 37 - 01 December 1994

Contents

Page 5 of 5

Research Article

  • Every Countable Regular Space Without Isolated Points is Connectifiable

  • V. Tzannes
  • Published online by Cambridge University Press:
    20 November 2018, pp. 556-559
    • Article
      • You have access
    • PDF
    • Export citation

  • It is proved that every countable regular space without isolated points can be embedded densely in a connected Hausdorff space with a dispersion point.

  • On Semiperfect FPF-Rings

  • Mohamed Yousif
  • Published online by Cambridge University Press:
    20 November 2018, pp. 287-288
    • Article
      • You have access
    • PDF
    • Export citation

  • We show that a semiperfect right FPF-ring is right self-injective if and only if J(R) — Z(RR), extending a well-known result due to Carl Faith on semiperfect right FPF-rings with nil Jacobson radical.

  • Gradient Estimates on Rd

  • Feng-Yu Wang
  • Published online by Cambridge University Press:
    20 November 2018, pp. 560-570
    • Article
      • You have access
    • PDF
    • Export citation

  • This paper uses both the maximum principle and coupling method to study gradient estimates of positive solutions to Lu = 0 on Rd, where

    with (aij) uniformly positive definite and aij,bi € C1(Rd). We obtain some upper bounds of |∇u|/u and ∥∇u∥∞/∥u∥∞, which imply a Harnack inequality and improve the corresponding results proved in Cranston [4]. Besides, two examples show that our estimates can be sharp.

Page 5 of 5