• Yesterday, 22:16
Update - Version 1.3.1: Bug fix for usernames with special characters.
2 replies | 198 view(s)
• Yesterday, 19:16
I have added code to that external script so a single quote in a username won't throw an error, and I edited the post so that only the username is...
15 replies | 420 view(s)
• Yesterday, 12:00
Here is this week's POTW: A small bug is placed between two blocks of masses $m_1$ and $m_2$ ($m_1>m_2$) on a frictionless table. A horizontal...
0 replies | 20 view(s)
• Yesterday, 11:59
No one answered this week's problem, and my solution is as follows: A formula for power $P$ we can apply here is: P=\frac{1}{2}\mu\omega^2A^2v...
1 replies | 63 view(s)
• Yesterday, 01:31
I am reading Paul E. Bland's book: Rings and Their Modules and am currently focused on Section 2.2 Free Modules ... ... I need someone to check...
1 replies | 31 view(s)
• April 19th, 2018, 19:58
Quite a coincidence ... :) ... Peter
7 replies | 91 view(s)
• April 19th, 2018, 19:51
My apologies steenis ... I did not read your previous post carefully enough ... and somehow (I don't quite know how ??? ) missed your statement : ...
4 replies | 409 view(s)
• April 18th, 2018, 23:19
Hi Steenis, Just reworking Section 2.2 of Bland ... and in particular Proposition 2.2.3 ... In the above post you write: "... ... (3) =>...
4 replies | 409 view(s)
• April 18th, 2018, 19:34
Hugo and Pierre are the names of my friends large standard poodles ... Peter
7 replies | 91 view(s)
• April 17th, 2018, 20:55
Hi Steenis ... sorry to be slow in responding ... But Hugo (one of my friends large standard poodles - Hugo and Pierre...) chewed up my glasses...
7 replies | 91 view(s)
• April 15th, 2018, 20:01
Awesome work, as always Chris! (Yes) Using your post, where the base case and induction statement have been given, then the induction step would...
6 replies | 124 view(s)
• April 15th, 2018, 12:02
Here are the choices: A.) \frac{1}{2} B.) \frac{1}{2}-\frac{2^{2006}}{3^{2^{2006}}-1} C.) \frac{1}{2}-\frac{2^{2005}}{3^{2^{2005}}-1} D.)...
6 replies | 124 view(s)
• April 14th, 2018, 23:54
I am reading Paul E. Bland's book: Rings and Their Modules and am currently focused on Section 2.1 Direct Products and Direct Sums ... ... I need...
7 replies | 91 view(s)
• April 14th, 2018, 10:56
The actual sum he's given is: S=\sum_{k=0}^{2006}\left(\frac{2^k}{3^{2^k}+1}\right) And he's given several choices for the result. I was hoping...
6 replies | 124 view(s)
• April 14th, 2018, 10:10
Hello MHB! (Wave) A young man in high school I know has been essentially tasked with finding the following partial sum: ...
6 replies | 124 view(s)
• April 14th, 2018, 06:19
THanks Steenis ... ... well, staying with a friend who doesn't drink ... But had a couple of drinks of whisky and soda last night ... :) ... ...
2 replies | 42 view(s)
• April 14th, 2018, 04:14
I am reading Paul E. Bland's book: Rings and Their Modules and am currently focused on Section 2.1 Direct Products and Direct Sums ... ... I need...
1 replies | 37 view(s)
• April 13th, 2018, 22:46
I am reading Paul E. Bland's book: Rings and Their Modules and am currently focused on Section 2.1 Direct Products and Direct Sums ... ... I need...
2 replies | 42 view(s)
• April 13th, 2018, 02:28
Hi steenis ... Continuing the proof of ... \Delta is a finite set \Longrightarrow \prod_\Delta M_\alpha = \bigoplus_\Delta M_\alpha ...
17 replies | 214 view(s)
• April 12th, 2018, 20:03
THanks Steenis ... ... very helpful to have your confirmation ... Peter
17 replies | 214 view(s)
• April 12th, 2018, 11:47
MarkFL replied to a thread Hello from Pan in Introductions
Hello, and welcome to MHB panpan! (Wave)
6 replies | 86 view(s)
• April 12th, 2018, 11:15
Hello, MHB Community! (Wave) anemone has asked me to stand in for her for a few weeks, so please be gentle. (Bigsmile) Here is this week's...
1 replies | 63 view(s)
• April 12th, 2018, 11:11
Hello MHB Community! (Wave) I am going to stand in for anemone for a few weeks. Congratulations to the following for their correct submissions:...
1 replies | 129 view(s)
• April 12th, 2018, 03:51
Hi steenis ... Continuing the proof of ... \Delta is a finite set \Longrightarrow \prod_\Delta M_\alpha = \bigoplus_\Delta M_\alpha ......
17 replies | 214 view(s)
• April 12th, 2018, 00:42
Hi steenis ... Continuing the proof of ... \Delta is a finite set \Longrightarrow \prod_\Delta M_\alpha = \bigoplus_\Delta M_\alpha ......
17 replies | 214 view(s)
• April 11th, 2018, 23:13
Hi steenis ... I have been reflecting on your proof using Proposition 2.1.6 ... I must confess that I do not fully understand the underlying...
17 replies | 214 view(s)
• April 11th, 2018, 22:19
Hi steenis ... Sorry to be slow in answering ... have temporarily left my home state of Tasmania and am travelling through the mainland state of...
17 replies | 214 view(s)
• April 10th, 2018, 03:23
Hi steenis ... I think the proof is valid ... EXCEPT ... I cannot see how we can justify making the assumption: " ... ... suppose \$M_\alpha...
17 replies | 214 view(s)
• April 9th, 2018, 21:16
Yes, that was a bad post. The OP stated an unfamiliarity with limits, so I "winged it." What I would actually do is: ...
7 replies | 105 view(s)
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### 3 Visitor Messages

1. Hello and welcome back to MHB, Fallen Angel!

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2. Hello Fallen Angel!

As the moderator of the Challenge Problems sub-forum, I want to thank you for posting a challenge for our members to have fun solving with.

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anemone
3. Hello and welcome to MHB, Fallen Angel!

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"Poetry is the art of giving different names to the same thing, Mathematics is the art of giving the same name to different things" H. Poincare

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