# Page history

## 27 May 2019

## 14 March 2019

## 25 June 2018

## 19 February 2018

## 15 November 2017

## 30 August 2017

→On a two-dimensional rectangular grid

→On a two-dimensional rectangular grid: In the fourth row, changed some vdots to ddots. I think they make more sense here.

## 24 March 2017

## 3 November 2016

## 19 October 2016

→Methods of solution

+5

→Methods of solution

+139

→Methods of solution

m+13

→Methods of solution

-1

→Methods of solution

→Methods of solution

+227

## 13 October 2016

## 30 November 2015

## 26 November 2014

→On a two-dimensional rectangular grid

→On a two-dimensional rectangular grid

+69

→Example

+6

→On a two-dimensional rectangular grid

+30

## 30 March 2014

## 14 March 2014

## 17 July 2013

## 4 May 2013

## 31 October 2012

Reverting possible vandalism by 36.74.191.235 to version by 163.1.19.73. False positive? Report it. Thanks, ClueBot NG. (1306819) (Bot)

m-5

no edit summary

+5

## 15 October 2012

## 1 June 2012

Undid revision 495441442 by Kri (talk) One equation can describe many equations if it is in matrix form

m-1

→Example: plural

m+1

→On a two-dimensional rectangular grid: We need to switch sign of b, though, if we switch sign of A and D

+1

→On a two-dimensional rectangular grid: The definition of the laplacian has still the wrong sign

-5

Reverted to revision 495433419 by Kri: Solution to the system is independent of sign change. (TW)

+117

A and D are matrices and do not need to be enclosed by brackets

m-60

→Example: Had to change sign here to.

-19

→On a two-dimensional rectangular grid: The definition of the laplacian had the wrong sign. Changed sign in all equations

-38

d and partials -> Delta

+50

→On a two-dimensional rectangular grid: Added expression for b

+73