• Yesterday, 15:04
$\newcommand{\doop}{\operatorname{do}}$ Problem: (This is from Study question 4.3.1 from Causal Inference in Statistics: A Primer, by Pearl,...
0 replies | 39 view(s)
• March 27th, 2020, 23:42
Here is this week's POTW: ----- Find the minimum value of $(u-v)^2+\left(\sqrt{2-u^2}-\dfrac{9}{v}\right)^2$ for $0<u<\sqrt{2}$ and $v>0$. ...
0 replies | 82 view(s)
• March 27th, 2020, 23:38
Hi MHB! I have decided to extend the deadline by another week so that our members can give this problem another shot and I am looking forward to...
1 replies | 202 view(s)
• March 26th, 2020, 21:12
I am reading Tej Bahadur Singh: Elements of Topology, CRC Press, 2013 ... ... and am currently focused on Chapter 1, Section 1.4: Basis ... ......
0 replies | 103 view(s)
• March 24th, 2020, 21:54
I am reading Tej Bahadur Singh: Elements of Topology, CRC Press, 2013 ... ... and am currently focused on Chapter 1, Section 1.4: Basis ... ... ...
0 replies | 102 view(s)
• March 24th, 2020, 21:36
Thanks GJA ... I appreciate your help ... Peter
2 replies | 137 view(s)
• March 23rd, 2020, 03:05
In a recent post I wanted to use a capital tau ... and so typed \mathcal{ \Tau_1 } but generated an error ... Can someone please help ... ... ...
2 replies | 102 view(s)
• March 23rd, 2020, 02:51
I am reading Tej Bahadur Singh: Elements of Topology, CRC Press, 2013 ... ... and am currently focused on Chapter 1, Section 1.4: Basis ... ... ...
2 replies | 137 view(s)
• March 20th, 2020, 02:18
Here is this week's POTW: ----- Show that the set of real numbers $x$ which satisfy the inequality \sum_{k=1}^{70}\dfrac{k}{x-k}\ge...
1 replies | 202 view(s)
• March 20th, 2020, 02:15
Congratulations to the following members for their correct solution! 1. castor28 2. lfdahl 3. kaliprasad 4. Oxide Solution from Oxide: ...
1 replies | 231 view(s)
• March 19th, 2020, 22:50
Thanks Oxide ... I really appreciate your help ... Peter
2 replies | 198 view(s)
• March 19th, 2020, 08:52
Just as a heads up, when we make the switch over to XenForo I will need to close MHB temporarily to do this. I hope it won't take more than part of a...
10 replies | 2088 view(s)
• March 19th, 2020, 06:00
I am reading Tej Bahadur Singh: Elements of Topology, CRC Press, 2013 ... ... and am currently focused on Chapter 4, Section 4.1: Sequences ... ...
2 replies | 198 view(s)
• March 19th, 2020, 05:41
Hi GJA ... .. Thanks so much for the help ... Peter
2 replies | 178 view(s)
• March 18th, 2020, 22:20
I am reading Tej Bahadur Singh: Elements of Topology, CRC Press, 2013 ... ... and am currently focused on Chapter 4, Section 4.1: Sequences ... ...
2 replies | 178 view(s)
• March 18th, 2020, 22:04
Thanks Evgeny ... Your post turned out to be really helpful ... Appreciate your help ... Peter
2 replies | 157 view(s)
• March 15th, 2020, 02:15
I am reading Tej Bahadur Singh: Elements of Topology, CRC Press, 2013 ... ... and am currently focused on Chapter 1, Section 1.2: Topological ...
2 replies | 157 view(s)
• March 14th, 2020, 19:42
Thanks for the help, Opalg ... really appreciate it ... Just working through what you have written ... Thanks again ... Peter
2 replies | 94 view(s)
• March 14th, 2020, 11:03
Hi all, I know it's been a series of "we're getting close" but the dev team I hired to help with the key pieces of functionality I listed above...
10 replies | 2088 view(s)
• March 14th, 2020, 04:03
I am reading Tej Bahadur Singh: Elements of Topology, CRC Press, 2013 ... ... and am currently focused on Chapter 1, Section 1.2: Topological ...
1 replies | 53 view(s)
• March 13th, 2020, 23:08
I am reading Tej Bahadur Singh: Elements of Topology, CRC Press, 2013 ... ... and am currently focused on Chapter 1, Section 1.2: Topological Spaces...
2 replies | 94 view(s)
• March 13th, 2020, 10:03
Here is this week's POTW: ----- How many perfect squares are divisors of the product $1!\cdot 2! \cdot 3! \cdots 9!$? ----- Remember to...
1 replies | 231 view(s)
• March 13th, 2020, 09:58
Congratulations to the following members for their correct solution!(Cool) 1. castor28 2. kaliprasad 3. lfdahl Solution from castor28: The...
1 replies | 271 view(s)
• March 10th, 2020, 22:58
Thanks HallsofIvy ... appreciate your help ... Peter
2 replies | 214 view(s)
• March 8th, 2020, 21:51
I am reading Sasho Kalajdzievski's book: "An Illustrated Introduction to Topology and Homotopy" and am currently focused on Chapter 3: Topological...
2 replies | 214 view(s)
More Activity

### 38 Visitor Messages

1. Hello and welcome back to MHB, caffeinemachine!

We are happy to see that you have returned, and we look forward to your continued participation here!

On Behalf Of MHB's Staff,

Ackbach.
2. Happy birthday, caffeinemachine!
3. Yes caffeinemachine, I have a different solution of my own. I would have posted it along with johng's yesterday, but I was in a hurry, as I needed to get other things done. I might post it later today.
4. Thank you! It's been a bit hectic, what with moving to Kansas, and all. But I did have a great birthday.
5. Hi caffeinemachine. Very sorry that this is happening. Could you make a thread in our feedback forum describing what is happening when you get a moment? We will try to fix it ASAP.
6. My interests lie in dispersive wave equations and geometric analysis. You have a pretty interesting combination: combinatorics and geometry. So will you do combinatorial geometry or geometric combinatorics?
7. Hi caffeinemachine! I just wanted to wish you a happy birthday, and I hope you're having a great time.
8. Hey, just wanted to thank you. I didn't know the command \widehat existed until I saw you using it in your question about modules. Hope you get an answer, haha.

Best wishes.
9. Happy Birthday, my friend!
10. Hi AK,

I wish you luck, happiness, health and safety today, tomorrow and beyond...

As you look back on yesterday, may your memories be warm ones. As you celebrate today, may your heart be filled with happiness and joy. As you look ahead to tomorrow, may your deepest hopes and dreams come true for you!

I wish that for every extra candle on your cake, you receive an extra reason to smile. Happy Birthday to you!
Showing Visitor Messages 1 to 10 of 38
Page 1 of 4 123 ... Last
Page 1 of 4 123 ... Last

#### Basic Information

Date of Birth
April 13, 1991 (28)
Biography:
I obtained a master's degree in mechanical engineering in May 2014.
Then I went on to join a master's programme in mathematics and obtained a master's degree in July 2016. I am currently a third year PhD student in mathematics. I love fountain pens and am a die hard fan of the Prince of Persia 2008 video game.
Location:
India
Interests:
Mathematics, Taekwondo.
Occupation:
Student
Country Flag:
India

#### Statistics

Total Posts
822
Posts Per Day
0.28
Thanks Given
582
1,149
1.398
##### Visitor Messages
Total Messages
38
Most Recent Message
April 5th, 2019 07:23
##### General Information
Last Activity
February 20th, 2020 02:22
Last Visit
February 3rd, 2020 at 01:04
Last Post
February 3rd, 2020 at 01:04
Join Date
March 10th, 2012
Referrals
2
Referred Members
cupofcoffee, hersh

### 19 Friends

1. #### AckbachOffline

Indicium Physicus

MHB Master

3. #### ArenholtOffline

MHB Apprentice

4. #### BacteriusOffline

MHB Journeyman

5. #### Bruce WayneOffline

MHB Apprentice

MHB Master

7. #### FantiniOffline

MHB Craftsman

8. #### Fernando RevillaOffline

MHB Journeyman

9. #### JamesonOffline

Администратор

10. #### johngOffline

MHB Craftsman

Showing Friends 1 to 10 of 19
Page 1 of 2 12 Last