What Mathematical Expression Describes a Cone with a Flat Tip?

  • Context: Graduate 
  • Thread starter Thread starter sunone
  • Start date Start date
  • Tags Tags
    Expression Figure
Click For Summary

Discussion Overview

The discussion revolves around finding a mathematical expression to describe a geometric figure resembling a cone with a flat tip, as depicted in an image shared by a participant. The inquiry includes various approaches to modeling this shape, which is not a standard truncated cone.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests an expression for a cone-like figure with a flat tip, suggesting openness to various mathematical approaches including skewed conics and cubic surfaces.
  • Another participant proposes terms like "ellipsecone," "ovalcone," and "linecone" as potential names for the shape, indicating these are invented terms rather than established mathematical nomenclature.
  • A different suggestion involves modeling the shape as an "elliptical wedge," proposing a method to interpolate between two ellipses and adjusting the width of the upper ellipse to zero.
  • Additional contributions include playful suggestions such as "wedgeonic" or "wedgeone," and even "cowbell," indicating a light-hearted tone in parts of the discussion.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on a specific mathematical expression or terminology for the shape, with multiple competing suggestions and a mix of serious and humorous contributions.

Contextual Notes

Some suggestions may depend on specific interpretations of the geometric properties involved, and the lack of a clear definition for the shape complicates the discussion. The mathematical steps for modeling the shape remain unresolved.

Who May Find This Useful

Individuals interested in geometric modeling, mathematical terminology, or those exploring unconventional shapes in mathematics may find this discussion relevant.

sunone
Messages
3
Reaction score
0
http://img138.imageshack.us/img138/7113/conewithflattip.png

Help needed, I need an expression of the figure in the picture, it is like a conic but the tip is not a point but a short 1D segment (it s not a truncated conic), I accept anything ;-) skewed Conics, Sperical Harmonics approx, cubic surface... any suggestion?
 
Last edited by a moderator:
Physics news on Phys.org
ellipseconic and for the object an ellipsecone (I thought first ellipsone but that's already a word for winds that move in elliptical paths)

alternatively you could use ovalconic and ovalcone

or lineconic and linecone

** (I didn't know if you were try to name something new or wanted the correct mathematical name. My suggestions are inventions only)
 
Last edited:
How about elliptical wedge? Or do you need to model it? You take the formula for two ellipses and interpolate between them. Set the width of the upper one to zero. Something like this:

X(t)=(a_1 (1-z/c) + a_2(z/c) )\cos(t)
Y(t)=(b(1-z/c)\sin(t)
 
Last edited:
How about a cowbell?
 
Vargo said:
How about a cowbell?

Y'all must be from Texas.
 
Yes, I do live in Texas
 
Well, howdy neighbor!
 
  • #10
Vargo said:
Well, howdy neighbor!

Howdy!
 

Similar threads

  • Poll Poll
  • · Replies 2 ·
Replies
2
Views
7K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 4 ·
Replies
4
Views
4K
  • · Replies 6 ·
Replies
6
Views
5K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 7 ·
Replies
7
Views
4K