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  • Is f rank (zero infinity) the same as outer product f for arbitrary function f?

    From Brian McGuinness@b.mcguinness747@gmail.com to comp.lang.apl on Thu Apr 7 13:28:51 2022
    From Newsgroup: comp.lang.apl

    A few trials in NARS2000 seem to suggest that these are equivalent, but I was wondering if there is some subtle difference I'm not aware of.
    For example,
    araE1 2 3 4 5
    braE10 20 30 40 50 60
    a (+rin0 reR) b
    11 21 31 41 51 61
    12 22 32 42 52 62
    13 23 33 43 53 63
    14 24 34 44 54 64
    15 25 35 45 55 65
    a rey.+b
    11 21 31 41 51 61
    12 22 32 42 52 62
    13 23 33 43 53 63
    14 24 34 44 54 64
    15 25 35 45 55 65
    --- Brian McGuinness
    --- Synchronet 3.21d-Linux NewsLink 1.2
  • From Elijah Stone@elronnd@elronnd.net to comp.lang.apl on Thu Apr 21 23:05:12 2022
    From Newsgroup: comp.lang.apl

    This message is in MIME format. The first part should be readable text,
    while the remaining parts are likely unreadable without MIME-aware tools.

    --5845450489856-1302180703-1650607516=:64669
    Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE

    outer product f is f=E2=8D=A4=E2=88=9E 0=E2=8D=A40 =E2=88=9E

    On Thu, 7 Apr 2022, Brian McGuinness wrote:

    A few trials in NARS2000 seem to suggest that these are equivalent, but I=
    was wondering if there is some subtle difference I'm not aware of.

    For example,

    a=E2=86=901 2 3 4 5
    b=E2=86=9010 20 30 40 50 60
    a (+=E2=8D=A40 =E2=88=9E) b
    11 21 31 41 51 61
    12 22 32 42 52 62
    13 23 33 43 53 63
    14 24 34 44 54 64
    15 25 35 45 55 65
    a =E2=88=98.+b
    11 21 31 41 51 61
    12 22 32 42 52 62
    13 23 33 43 53 63
    14 24 34 44 54 64
    15 25 35 45 55 65

    --- Brian McGuinness

    --5845450489856-1302180703-1650607516=:64669--
    --- Synchronet 3.21d-Linux NewsLink 1.2
  • From Brian McGuinness@b.mcguinness747@gmail.com to comp.lang.apl on Sun May 15 17:16:47 2022
    From Newsgroup: comp.lang.apl

    Ok. Thanks.
    On Friday, April 22, 2022 at 2:05:18 AM UTC-4, Elijah Stone wrote:
    outer product f is frinreR 0rin0 reR
    On Thu, 7 Apr 2022, Brian McGuinness wrote:

    A few trials in NARS2000 seem to suggest that these are equivalent, but I was wondering if there is some subtle difference I'm not aware of.

    For example,

    araE1 2 3 4 5
    braE10 20 30 40 50 60
    a (+rin0 reR) b
    11 21 31 41 51 61
    12 22 32 42 52 62
    13 23 33 43 53 63
    14 24 34 44 54 64
    15 25 35 45 55 65
    a rey.+b
    11 21 31 41 51 61
    12 22 32 42 52 62
    13 23 33 43 53 63
    14 24 34 44 54 64
    15 25 35 45 55 65

    --- Brian McGuinness

    --- Synchronet 3.21d-Linux NewsLink 1.2