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Welcome to the Geometric Algebra google group.

This group is moderated, but if you post something that is on topic, all future posts will be allowed without moderated.

Unlike stackexchange and physicsforums, the google forums software unfortunately has no integrated latex markup support.

Given that, there are some better alternatives available, which didn't exist when this group was created:

1. If you have a fully formed self contained question, you might want to ask on https://math.stackexchange.com

2. There is a vibrant discord server, bivector, for discussion of all things geometric algebra at: https://discord.gg/vGY6pPk

0 selected

peter cameron

10/4/24

GA in the history of physics

Not Your Father's Physics

unread,

GA in the history of physics

Not Your Father's Physics

10/4/24

Fabrice PFAFF

10/4/24

A New Interactive Tool for Learning Clifford Algebras

Hello I am relatively new to the geometric algebra community. I have recently developed a tool called

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A New Interactive Tool for Learning Clifford Algebras

Hello I am relatively new to the geometric algebra community. I have recently developed a tool called

10/4/24

Fred Lunnon, … alexander arsenovic4

11/19/23

Re: N Dimensional Rotor Spherical Interpolation

you should join the discord server. seel link on this page https://bivector.net/ lot of people on

unread,

Re: N Dimensional Rotor Spherical Interpolation

you should join the discord server. seel link on this page https://bivector.net/ lot of people on

11/19/23

Ginhak Kim, Peeter Joot12

9/17/23

Maxwell equations are not electromagnetic characteristics, but geometric ones.

Hi Peeter I rewrote the first part of the book, but it's still an ms-word file. Please read the

unread,

Maxwell equations are not electromagnetic characteristics, but geometric ones.

Hi Peeter I rewrote the first part of the book, but it's still an ms-word file. Please read the

9/17/23

2olav, Laurent Steffan5

6/8/23

Clucalc/CluViz

Amazing! It works perfectly. Thank you very much! Olav torsdag 8. juni 2023 kl. 20:45:03 UTC+2 skrev

unread,

Clucalc/CluViz

Amazing! It works perfectly. Thank you very much! Olav torsdag 8. juni 2023 kl. 20:45:03 UTC+2 skrev

6/8/23

Fred Feucht, Alan Bromborsky2

2/18/23

Clifford addon for relativistic and quantum physics

You might find the following link of interest - Galgebra On Friday, February 17, 2023 at 11:05:37 AM

unread,

Clifford addon for relativistic and quantum physics

You might find the following link of interest - Galgebra On Friday, February 17, 2023 at 11:05:37 AM

2/18/23

PengKuan Em

12/6/22

Determination of the relative roll, pitch and yaw between arbitrary objects using 3D complex number

The roll, pitch and yaw of an object relative to another is complex to compute. We use 3D complex

unread,

Determination of the relative roll, pitch and yaw between arbitrary objects using 3D complex number

The roll, pitch and yaw of an object relative to another is complex to compute. We use 3D complex

12/6/22

PengKuan Em

5/30/22

Computing orientation with complex multiplication but without trigonometric function

Today's methods for computing orientation are quaternion and rotation matrix. However, their

unread,

Computing orientation with complex multiplication but without trigonometric function

Today's methods for computing orientation are quaternion and rotation matrix. However, their

5/30/22

Ian McCreath, … Manfred5

3/6/22

Reversing the Geometric Product

> This is obviously one of those areas where clifford algebra and geometric algebra present a

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Reversing the Geometric Product

> This is obviously one of those areas where clifford algebra and geometric algebra present a

3/6/22

PengKuan Em, Fred Lunnon3

2/18/22

Extending complex number to spaces with 3, 4 or any number of dimensions

" Generalisation to Euclidean n-space of a combination of Euler angles with complex numbers

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Extending complex number to spaces with 3, 4 or any number of dimensions

" Generalisation to Euclidean n-space of a combination of Euler angles with complex numbers

2/18/22

peter cameron

10/4/21

Quantum Impedance Model of geometric Clifford algebra vacuum wavefunction

a link to 73 minute presentation given to the Indian Association of Physics Teachers summer workshop

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Quantum Impedance Model of geometric Clifford algebra vacuum wavefunction

a link to 73 minute presentation given to the Indian Association of Physics Teachers summer workshop

10/4/21

PengKuan Em

9/19/21

Step by step rotation in normal and high dimensional space and meaning of quaternion

The orientation of body in space is defined 3 by angles. The step by step rotation process and chain

unread,

Step by step rotation in normal and high dimensional space and meaning of quaternion

The orientation of body in space is defined 3 by angles. The step by step rotation process and chain

9/19/21

Tahir ulhaq, … alexander arsenovic6

4/3/21

Request for colloboration

there is also an active discord channel, and forum which can be found on https://bivector.net/ On Thu

unread,

Request for colloboration

there is also an active discord channel, and forum which can be found on https://bivector.net/ On Thu

4/3/21

Tahir ulhaq

3/27/21

Quaestion in Geometrical representation of clifford algebras

Anyone can help me in understanding the reshaping of three volume elements like two plane elements

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Quaestion in Geometrical representation of clifford algebras

Anyone can help me in understanding the reshaping of three volume elements like two plane elements

3/27/21

Frédéric de Montmollin, … Alan Bromborsky4

3/2/21

Newbie question on some exercise

Attached is the output of a galgebra program that shows the sort of identities you can derive using a

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Newbie question on some exercise

Attached is the output of a galgebra program that shows the sort of identities you can derive using a

3/2/21

Alan Bromborsky

3/1/21

Re: Abridged summary of geometric_algebra@googlegroups.com - 2 updates in 1 topic

This might be useful - https://galgebra.readthedocs.io/en/latest/ On 3/1/21 10:15 AM,

unread,

Re: Abridged summary of geometric_algebra@googlegroups.com - 2 updates in 1 topic

This might be useful - https://galgebra.readthedocs.io/en/latest/ On 3/1/21 10:15 AM,

3/1/21

Bill Page, garret sobczyk3

5/1/20

Re: I have 1986 only pdf of every page separately

Garret, The pdfunite program is part of the poppler utilities package. This package is often already

unread,

Re: I have 1986 only pdf of every page separately

Garret, The pdfunite program is part of the poppler utilities package. This package is often already

5/1/20

Manfred, garret sobczyk4

5/1/20

The natural Clifford algebra of a vector space

Hi Manfred - nice to hear from you. I am attaching my author's copy of my paper "Notes on

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The natural Clifford algebra of a vector space

Hi Manfred - nice to hear from you. I am attaching my author's copy of my paper "Notes on

5/1/20

CarlBrannen

4/27/20

Group Algebras of Geometric Algebras.

Given a ring or field R and a finite group G of size N, the "group algebra over R or G[R]"

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Group Algebras of Geometric Algebras.

Given a ring or field R and a finite group G of size N, the "group algebra over R or G[R]"

4/27/20

Leandro A. F. Fernandes

2/5/20

New version of the ga-benchmark!

Hi everyone, Just to let people know that a new version of the ga-benchmark is available (https://

unread,

New version of the ga-benchmark!

Hi everyone, Just to let people know that a new version of the ga-benchmark is available (https://

2/5/20

Fred Lunnon, garret sobczyk2

1/29/20

Re: [math-fun] Gimbal lock??

Clifford's geometric algebra should be recognized as a general (multi)vector analysis of higher

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Re: [math-fun] Gimbal lock??

Clifford's geometric algebra should be recognized as a general (multi)vector analysis of higher

1/29/20

garret sobczyk, Hongying Li2

12/29/19

Coming soon: Matrix Gateway to Geometric Algebra, Spacetime and Spinors

For those interested, here is the link on amazon: https://www.amazon.fr/gp/product/1704596629/ref=

unread,

Coming soon: Matrix Gateway to Geometric Algebra, Spacetime and Spinors

For those interested, here is the link on amazon: https://www.amazon.fr/gp/product/1704596629/ref=

12/29/19

Hugo Hadfield, Hansen Wang2

12/29/19

clifford python new version!

Thanks! On Friday, 8 June 2018 17:44:57 UTC+1, Hugo Hadfield wrote: Hi everyone, Just to let people

unread,

clifford python new version!

Thanks! On Friday, 8 June 2018 17:44:57 UTC+1, Hugo Hadfield wrote: Hi everyone, Just to let people

12/29/19

Stephen De Gabrielle

11/11/19

please upvote this 3Blue1Brown video suggestion on reddit

This comment; https://www.reddit.com/r/3Blue1Brown/comments/c7o4pi/video_suggestions/esihwt9?

unread,

please upvote this 3Blue1Brown video suggestion on reddit

This comment; https://www.reddit.com/r/3Blue1Brown/comments/c7o4pi/video_suggestions/esihwt9?

11/11/19

Fred Lunnon, … Jeremiah Ong11

9/9/19

What use are left and right contraction?

Necroing this thread in case someone else wanders here by a google search or something. The main

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What use are left and right contraction?

Necroing this thread in case someone else wanders here by a google search or something. The main

9/9/19

Fred Lunnon, John Gonsowski4

3/29/19

triality in GA

Would be really nice if Lounesto was still alive. To get the spinors used for fermions in physics,

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triality in GA

Would be really nice if Lounesto was still alive. To get the spinors used for fermions in physics,

3/29/19

dave...@gmail.com, Manfred2

3/24/19

basic question about units analysis

You may be assuming too much. You cannot arbitrarily choose bits of a multivector to identify as

unread,

basic question about units analysis

You may be assuming too much. You cannot arbitrarily choose bits of a multivector to identify as

3/24/19

Ruvi Lecamwasam, … Manfred7

11/15/18

Evaluating (a \times b)^2 using Geometric Algebra

Ruvi, sorry, (anti-)commuting of 'I' is not a matter of convention, I was just plain wrong:

unread,

Evaluating (a \times b)^2 using Geometric Algebra

Ruvi, sorry, (anti-)commuting of 'I' is not a matter of convention, I was just plain wrong:

11/15/18

M Z, Manfred4

8/23/18

Newbie question on wedge product - Is -e2 ^ -e1 = -(e1 ^ e2)?

Thanks, Manfred. It is taking me a bit to get used to the operator, but I am gradually getting it. On

unread,

Newbie question on wedge product - Is -e2 ^ -e1 = -(e1 ^ e2)?

Thanks, Manfred. It is taking me a bit to get used to the operator, but I am gradually getting it. On

8/23/18

Nehal Patel, … Manfred17

8/17/18

Interpretations of Clifford Algebras

Yes, I have considered these, though thusfar only speculating that at least some types of quadric

unread,

Interpretations of Clifford Algebras

Yes, I have considered these, though thusfar only speculating that at least some types of quadric

8/17/18