Math Is Fun Forum

Sarah Rebekah

Member

Registered: 2011-09-25

Posts: 540

Birthday page for members

We could have a birthday page for members.

---

Love is the key to life

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Birthday page for members

that seems like a nice idea!
we should have a birthday notifier!

---

“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Birthday page for members

That is! I have a birthday coming up.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Birthday page for members

when?

---

“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Sarah Rebekah

Member

Registered: 2011-09-25

Posts: 540

Re: Birthday page for members

Glad u like i have a brithday comeing up to

---

Love is the key to life

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Birthday page for members

Hi anonimnystefy;

In June.

Thanks Sarah.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: Birthday page for members

hi everybody,

I think I've got a theorem here:

Cannot get a 'complement' bar over my set on the same line as the phi. 

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Birthday page for members

hi bob

why not just use \frac ?

---

“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: Birthday page for members

hi Stefy,

I was try to express the following

The complement of the set {people who have a birthday coming up} = phi = empty set.

You'll notice I was trying to inject some maths into the thread; sorry Sarah Rebekah.

btw Mine's in January.

So I wanted to get a bar over the whole of the set ... tried \bar (put the bar over the letter 'b' in the middle!) and \over (which is how I left it) but then the phi became the top of the fraction.  ggrrr!  so I put it into two separate lines. 

Any suggestions?

Bob

Last edited by Bob (2011-10-14 01:51:33)

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Sarah Rebekah

Member

Registered: 2011-09-25

Posts: 540

Re: Birthday page for members

its ok Bob

---

Love is the key to life

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Birthday page for members

I am not sure what all this means.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: Birthday page for members

It means I can do this

Thanks   

Bob

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Sarah Rebekah

Member

Registered: 2011-09-25

Posts: 540

Re: Birthday page for members

heheheheheheheh

---

Love is the key to life

Agnishom

Real Member

From: Riemann Sphere

Registered: 2011-01-29

Posts: 24,996

Website

Re: Birthday page for members

Will you explain the theorem?

---

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
I'm not crazy, my mother had me tested.

MathsIsFun

Administrator

Registered: 2005-01-21

Posts: 7,713

Re: Birthday page for members

People will have to volunteer their birthdays ...

---

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Birthday page for members

I think of it like this-every level of information I give out is a step closer to me. But, I am sure that if you searched through my posts you could find my birth date.

---

“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Birthday page for members

People will have to volunteer their birthdays ...

How can we get them to do that? Seems impossible.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Birthday page for members

Nobody will be made into that. Thus the use of "volunteer".

---

“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Birthday page for members

Hi anonimnystefy;

Maybe about 5 members would go back and fill in their birthdate. That is probably not enough.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Birthday page for members

I think it would be more,but you wouldn't be one of them.

---

“Here lies the reader who will never open this book. He is forever dead.
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Birthday page for members

Hmmmm. Who would believe it anyway?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,880

Re: Birthday page for members

I could add credibility to your DOB by including it in your YOB puzzle, Bobby!

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Birthday page for members

Hi;

Yes, you could. But who could solve it? I am still having major problems.

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: Birthday page for members

But who could solve it?

Somewhere in the multiverse I have solved it.  In fact I did it five years before it was set!

Unfortunately, I haven't found a way to communicate with any of the infinite number of other selves that exist in all these universes so I am unable to profit from this information in this universe.

The really annoying thing is: in at least one of those universes a 'Bob' has worked out how to communicate across universes.  Why isn't he doing so?

Bob (this universe version)

---

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,880

Re: Birthday page for members

Now, that's jolly interesting! It could very well explain the odd feeling I got when the person who solved my puzzle communicated their M solution to me. It seemed that they knew 'my' puzzle better than I did: that they might even be its original author, and that I, in this universe, am merely a subsequent author.

I may, then, have received a surreptitious www visit from another me! If we're a replication or a parallel existence of another life in some other universe within a multiverse, I'd draw the conclusion that one day I'll know much more M than I do now!!

---

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson