English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The subroutines RDSPMX, ADSPMX, MUSPMX, TRSPMX, M V S P M X , and WRSPMX of ACM Algorithm 408 were tested after conversion to Basic Fortran, and the following corrections appear to be needed: (1) In ADSPMX, the line after statement number 9 should be changed to IF (T.EQ.0.0) GO TO 911 and before statement number 11 the following line should be inserted: 911 JB = JB -I1 (2) In TRSPMX, after statement number 5 the following line should be inserted: J2 = 0 The error in ADSPMX showed up when adding two matrices containing elements with opposite values in corresponding positions, which should cancel; the error in TRSPMX was noted when transposing a matrix having a null first line.

Remark on “Algorithm 408: A Sparse Matrix Package (Part I) [F4]”