From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-0.3 required=5.0 tests=BAYES_00,FREEMAIL_FROM, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,8c8550b9f2cf7d40 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2003-06-05 13:51:38 PST Path: archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-06!sn-xit-08!supernews.com!border3.nntp.aus1.giganews.com!nntp.giganews.com!nntp3.aus1.giganews.com!nntp.gbronline.com!news.gbronline.com.POSTED!not-for-mail NNTP-Posting-Date: Thu, 05 Jun 2003 15:51:40 -0500 Date: Thu, 05 Jun 2003 15:52:04 -0500 From: Wesley Groleau Reply-To: wesgroleau@despammed.com Organization: Ain't no organization here! User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.3.1) Gecko/20030425 X-Accept-Language: en-us, en, es-mx, pt-br, fr-ca MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: Is ther any sense in *= and matrices? References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Message-ID: NNTP-Posting-Host: 216.117.18.35 X-Trace: sv3-CqO0TxylhH4VLx6tktdtdxuOI9MmuRrn0l0SgvF5FFoCmYy/aa77cNYKhCj1pEOdgBfS3+ntgd39xg+!6fAoL3Uz8msOdpxpEQf32i2PN8HnC34c9GJU90oOp8301PfLdVVrSZJw0ArV+9vCykQqh8oW2V5S!xgPT X-Complaints-To: abuse@gbronline.com X-DMCA-Complaints-To: abuse@gbronline.com X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.1 Xref: archiver1.google.com comp.lang.ada:38737 Date: 2003-06-05T15:52:04-05:00 List-Id: > The operands of * are called "factors", not "addends." oops, sloppy terminology. I haven't multiplied matrices in ten years, but I think that (other than jargon issues), my observation is true: >> if A(1,1) is computed before A (1,2) (in A := A * B), then the latter has already >>had one of its inputs changed. To overcome this >>without introducing a temporary "A" one would >>require a rather complicated set of temporary >>_parts_ of A.