Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Symmedian for a tetrahedron
    From: Bill Lionheart
    Date: 2017 Feb 5, 16:17 +0000

    I know we mainly do CN on a known surface but if you want to extend
    this to three dimensions where position lines become position planes
    the symmedian point as the least squared distance from four planes
    also works. See Jawad Sadek, Majid Bani-Yaghoub, and Noah H. Rhee,
    Forum Geometricorum, Isogonal Conjugates in a Tetrahedron,
    Forum Geo,Volume 16 (2016) 43–50.
    
    Possible applications include multilateration in three dimensional
    space from four distances (eg satellite navigation systems where you
    want position in 3-sapce)
    
    
    Bill Lionheart
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site