6 March 2018

There are all these kinds of names for numbers?

You remember the other day I got a hotel room number 407 and I had written about how it is an Armstrong number? (which is a special case of Narcissistic numbers). Well that got me thinking what are the other kind of numbers that are out there? I was surprised to find out there are so many different names.

Let’s start with Narcissistic numbers itself. Do you know when is a number narcissistic?
If the number is equal to the sum of each one of its digits raised to the number of digits, then it is narcissistic. Let’s take the example of 407. There are 3 digits in it and 407 = 4 cubed plus 0 cubed plus 7 cubed. That makes it a narcissistic number. Or take 1634. There are 4 digits in it. 1634 = 1 to the power 4 PLUS 6 to the power 4 PLUS 3 to the power 4 PLUS 4 to the power 4.

Apparently there are only 88 such narcissistic numbers.

Do you know what a perfect number is?
If all the divisors of a number (other than the number itself) add up to the number itself, it is called perfect. For example, 28. The factors are 1, 2, 4, 7 and 14. And they add to 28. Similary, 6 is a perfect number as is 496 and 8128.

Did you know there are happy numbers and sad numbers?
Take a number like 19. The digits are 1 and 9. Square them up and add. You get 1+81 = 82. Do the same again – 8 squared plus 2 squared is 68. Do again – you get 100. And then you are stuck on a loop of 1.
Now try 7. You get 49. Then 97. Then 130. Then 10. Then 1
There are a few numbers where if you keep doing this – square the digits and add and then keep doing – they will get stuck in a loop (either at 1 or a loop that does not have 1). Such numbers are called happy numbers. Every other number is a sad number!

What is a strong number?
If you add the factorials of the digits of the number and you land back at the original number, it is called strong number! Try 145. 1 factorial PLUS 4 factorial PLUS 5 factorial is 1 + 24 + 120 = 145. Thus it is a strong number

You know what is a circular number?
If the square of the number ends with the number itself, it is a circular number. e.g. 6, 25 …

Now Google and find out what is a vampire number? or an odious number? hoax number? pandigital number?

If you find more interesting numbers, do write back…

6 March 2018

Those indelible ink marks – one from 2013

I had run into Ryan Krusac in 2013 while perusing pens at the Atlanta Fountain Pen Show that year. I got to know about him and his family. He lives in North Georgia (I believe near Chattanooga area). His passion is making pens and he does a great job in the craftsmanship of each and every one he makes. That year, I bought this wooden body pen from him. The wood came from local forests of North Georgia mountains. Originally this had a medium tip nib. Ryan was kind enough to mail me a fine tip a few days later which I fit in and promptly started using. I go with black ink for this pen.

I was going to take the next pen picture a week later but this Sunday, while cleaning the pool after the long bike ride, I noticed the pine cone next to the tree trunk with bright sunlight falling on it. I knew the exact pen that would go great with that backdrop. Ran inside to get the pen and the camera.

And yes, much later I remembered that I completely forgotten to finish off the pool cleaning 🙂

Miriam, since you liked the previous pen picture… this picture is for you!!

5 March 2018

From the bartender’s corner: Gin #32 – Old Fourth Distillery gin

This one is a local one. Made right here in East Atlanta. I have not visited their distillery but I want to. The distillery was opened by five friends in 2014. The first product was vodka. Gin came later. So, the gin production cannot be more than 2 or 3 years.

The most interesting aspect of the gin is the base. Remember how I had featured a Colombian Gin that used sugarcane as the base (instead of corn and all that). Well, this one uses cane sugar sourced from an organic provider in Louisiana.

There are nine herbs and botanicals including juniper. At least some of them are vapor infused – like the pink peppermint. The other botanicals include grapefruit, lemon & orange Peel, cardamom, angelica root and coriander

The nose is that of a typical gin – juniper forward. The palate is mostly citrusy and the faint traces of coriander is decipherable in the end. The finish was short and rather abrupt.

This gin might go better in cocktails rather than with tonic water.

5 March 2018

Mom and the art of motorcycle communications

Of all the things I look forward to every morning, talking to my mom has to be one of the top of the list ones. Not for the sentimental value. But the hilarity of the discussions. Usually the discussions center around three key themes :

(*) Complaints about my dad – of which there are many. He is either trying too hard or not much at all. Or he is being too aggressive or too passive. He just cannot seem to hit the right spot.

(*) Weather – the mood for the entire day for my mom, I have come around to believe – is set by how conducive the weather is to drying out the clothes that she puts out on the clothesline every day after washing them. Bright sun? “Bhalo weather aaj”. (It is a good weather day). Even then she will slip in once in a while a complaint about how hot it is getting 🙂

(*) My niece – apparently she is not studying enough. This complaint incidentally has never changed in intensity over the years and is, by and large, totally uncorrelated to how much my niece actually studies.

And then once in a while, she will stray off to other topics – usually leaving her mightily confused. Today was such a day…

She started by asking what did I do on Niki’s birthday. I told her that Niki had dance practices the whole day. And then she went for the movies with her friends.

For good measure – and this is where I think I brought this upon myself – I told her that it was a glorious sunny day. Since, I did not have to worry about drying any clothes that particular morning, I took the motorcycle and went up to the mountains.

That took some time for her to grasp. “Othhatey paarli?”, she finally asked. She literally asked me if I could lift the motorcycle up the mountains. I think she had a mental picture of her poor son huffing and puffing as he dragged a much reluctant bike up the hills…

“Othhatey paarli maaney? Eki teney hichrey tultey hoy naaki? O to nijey nijey uthe porey”.
(What do you mean if I could pull it up? It is not like I have to drag it along. I ride on it)

I think she was suitably convinced. Now, some of you who follow my posts are probably aware that my mom is a psychiatric patient herself. One of the challenges she has is remembering new things.

“Tui ekta Hero Honda kinechhis na?”, was her next question.
Now, a brief background… when we were growing up, Hero Honda (a company in India with collaboration with the Japanese company) had brought out a two wheeler for the common person. It was pretty inexpensive those days and had very little power compared to two wheelers you can get in India these days. I think it was literally a 50 cc engine. When I had heard how much it could go on a liter of petrol, I had a legitimate doubt on whether it ran on petrol or petrol vapors. (“Teley chhotey na teler gondhhe?”)

To my mom – all two wheelers are the same. Every motorcycle is a Hero Honda she remembers from 35 years back. Which also explained why she thinks on a sunny day I go around dragging my “Hero Honda” up the mountains.

“Yes, mom! That is what I have bought. A little bigger – so that it can climb mountains by itself”.

“Bhalo korechhis”.

Finally, she was satisfied!

3 March 2018

I am honored to have been his roommate… some 35 years back

Growing up, one of the things I have been blessed with is some brilliant people I could call classmates. If I add up all the incredibly successful people that I can actually count as being my classmate during the various stages of my life, it will make anybody wonder how come not much of it ever rubbed off on me.

Rahul Guha – met him for the first time on Sunday, July the 10th 1983 around 4 PM when his parents had come by to drop him to start his 11th grade. It was a residential school and he and I (along with another incredibly successful classmate – Pratik Pal) were destined to be room mates.

Over the years, I have sometimes lost touch and then regained the same with this guy. Last week, he was in Atlanta and could squeeze enough time from his busy schedule to have dinner with me. While we talked about a lot of things – including my trips to his house in Kolkata during the early ’80s and a trip we had made together to Dip’s house in New Chumta Tea Estate – most of our discussions were around education. After all, it was education that has brought us together.

Driving back home later, I realized why guys like Rahul get to where they are today. It is not just the intelligence level – which is of course sky high – and it is also not the hard work – that is beyond reproach. The edge people like him have is their ability to reflect. That ability helps them achieve higher learning cycles than most mere mortals like us can.

Some of the reflections he shared with me absolutely hit the mark for me. We were talking about college education. His first point was how in India in those days, we entered college believing the toughest part was over. We had passed Joint Entrance Exam and then we were in college. If we went thru the motions, in about four years, we would get a degree and a job unless we really really messed it up. And yet, that is the time when our brain was the sharpest. From around that time, the brain would go on a steady decline. That was the time to learn completely new things. Things we might never ever use in our lives. But that was the one time our brains could absorb a lot of stuff. And for all you know, we might have discovered who we really were.

This somewhat aligned with my discussions with Madhav a couple of weeks back in Virginia Tech. He was talking about how it was “cool” in engineering colleges in our times to not study and ace the exams. Madhav reminded me how I was one of the so-called “intelligent” ones who never studied and yet aced the exams. But looking back, that was the stupidest thing. I should have been pushing my brain to learn new stuff then instead of not learning and simply letting a letter grade that suggested it was “okay” in life not to learn.

The second thing Rahul got me thinking on was the lack of training we got in how to ask questions. Instead, we were always expected to accept the prevailing norms and ways of doing things. And yet, college was the time we should have been pushed to keep asking questions – even if there were no answers. As he pointed out, sooner or later you will realize that the first step to getting a Nobel Prize is asking questions. Fearlessly. Regardless of whether there is any answer.

Finally, he felt that we should be taught how to communicate with people that we do not agree with. It is a skill that is getting rarer and rarer (we certainly both felt that the echo chambers created by social media has contributed to this problem) and yet no meaningful success can be ever reached without truly understanding the opposite point of view. Groupthink is a dangerous thing, as he pointed out.

Not all of our discussions were this serious. We slipped in and out of some hilarious incidents from school. Somehow, we both got onto the topic of statistics. Rahul and I studied statistics whereas our other room mate Pratik had studied biology. I was explaining the fundamental challenge I have with the concept of probability. The definition is based on a circular premise. Which, rigorous mathematics be spoken, should render it null and void. Rahul went on to explain that anomaly in Bayesian terms and made a hilarious statement. It was hilarious not just because it was true – but also the way he put it. I had to excuse myself and fish out my phone to write it down lest I forgot it later… in his words… “Probability, at some level, is a philosophical question”! Amen to that!!

My own greatest contribution to Rahul was waking him up every morning during our 11th and 12th grades. I was the sleep-very-little guy and he trusted me that I was the only one who could wake him up. It might have something to do with how I used to twist his legs and turn him over to wake him up.

A few minutes of early morning yelling and cursing later, he would calm down and thank me profusely for waking him up.

Oh! What would I not give up to get another one of those days again!!!