When closure of a path connected set is path connected again?

In general closure of a path connected set is not path connected. For example, the graph of sin(1/x) on (0,1] . However, if we require the original set to be open, does >that make the...

09 October 2019 8,505 5 View

Why are scientists trying to merge gravity and quantum physics even though gravity is just the curvature of space-time?

unification theory, string theory

02 March 2018 4,454 32 View

Can we define based covering rough graphs?

Rough graphs can be defined.By analogy can we define based covering rough graphs?

01 February 2018 6,092 0 View

Can we define Cayley graphs for rough or based covering rough or super rough groups?

Based covering rough seds, Cayley graphs

01 February 2018 2,446 1 View

What is the regular magic square matrix?

for exmple 16 3 2 13 5 10 11 18 9 6 7 12 4 15 14 1 is a magic square madrix 4x4 widh endries 1, 2,3,.... 16.

10 November 2017 7,298 8 View

Happy new yearrrr?

happy life reality research fresh

11 December 2016 3,768 15 View

Is anybody interested to topology of max plus algebras?

10 November 2016 5,932 1 View

What is the relation between nano topology and rough sets?

09 October 2016 4,800 5 View

How is the generalized inverse of block product of matrices in max plus algebra?

Max plus algebra; generalized inverse; block product of matrices

06 July 2016 6,746 1 View

How are Toeplitz systems in tropical algebras?

Tropical algebras, Toeplitz systems

03 April 2016 8,405 6 View

Where to find data on trees in tropical agroforestry?

Hi, I'm looking for data (mainly related to management: growth rate, canopy size, soil and climate preferences, etc.) about tropical trees used in tropical agroforestry. Have you ever heard about...

28 February 2021 7,356 8 View

How to combine two geometries in LAMMPS ?

I am trying to simulate contact angle of water on a quartz slab using LAMMPS. I have created and equilibriated the quartz slab and the water cluster separately. Now I want to create a composite...

17 February 2021 5,884 2 View

How can we determine the positive definiteness of multivariable polyomial? Is there any MATLAB function available for that?

Can we check the positive definiteness of a multivariable polynomial using MATLAB functions? Of course in literature, there are few complex methods that use tensor algebra. However, before going...

16 February 2021 1,218 3 View

Is there any research Mathematical perceptions depending on type of personalities?

My dissertation thesis is Perceptions of mathematical ceonceptions depending on Myers-Briggs Type Indicator personalities. It can includes methods of solving, understanding, imaginations of math...

07 February 2021 9,880 4 View

How to mesh complex geometry?

I have been trying to mesh some complex geometry and have been having issues. I have attached images of the geometry in question. This structure is very large in size but has some comparatively...

05 February 2021 6,379 5 View

Are there any papers that deal with the effects of climate change on the pollination in Tropical orchids?

There are a few papers dealing with the effects of climate change on the pollination of European orchids, but I wonder if similar studies have been carried out in the Tropics.

04 February 2021 1,818 4 View

Please recommend me the proper steps (blocking method) to generate Hexahedral mesh of the following geometry inside ICEM-CFD?

I am facing an issue while blocking for the geometry mentioned in the image. After blocking it ends with a triangular block due to its shape. How to create a hexahedral mesh for this geometry in...

02 February 2021 888 1 View

Matrix based scientific data analysis: extrapolating to matrices of sets?

Data sets, when structured, can be put in vector form (v(1)...v(n)), adding time dependency it's v(i, t) for i=1...n and t=1...T. Then we have a matrix of terms v(i, j)... Matrices are important,...

30 January 2021 9,295 6 View

What is the magnitude of yearly rhizopdeposition in tropical forests?

Hi all, I am trying to find reference values on annual soil rhizodeposition rates for different kinds of forests, with a particular interest for tropical rainforests. Do we have an idea of the...

26 January 2021 4,278 4 View

How to find nature of extremum of a functional? what are the mathematical prerequisites to understand it?

For a function, usually sign of second derivative (and if it is zero, even/odd index of higher order derivative whose numerical value is zero) is enough to detect whether the extreme point is...

25 January 2021 7,703 3 View