Larry's new car is actually owned by Peter MacNicol who lent it to the show.
The MATH used in this episode was: Trigonometry and the art gallery problem.
Larry's new car in this episode is a 1931 Ford Model A.
Opening numbers: 1,000,000 WOMEN STALKED
Charlie wrote his first mathematics paper at age 14 for the American Journal of Mathematics.
Charlie has a secret admirer (who likes him for his mind and ... hair).
Larry: '31 actually. Dawn of an amazing decade. FDR, Jesse Owens, Dirac's prediction of anti-particles. Yeah, our souls were rekindled.
Charlie: I can't help but see it as seventy year old technology.
Larry: You're just jealous because you can't drive a stick shift.
Charlie: Hey, you can't beat automatic transmission with cruise control.
Don: Fame for privacy? Are you kidding? Not me, no thank you.
Alan: Since when does a college professor receive anonymous fan letters?
Charlie: Are you kidding? Richard Fineman was a stud, he got marriage proposals by the dozen. Einstein was a true sex symbol.
Alan: If you're thinking of sending these letters to Amita, I would rethink your approach.
Charlie: Laugh riot, Father.
Charlie:(On the note he received) It's from someone who says she's a fan of my work on low dimensional topology. And she's a fan of my...hair.
Megan:(To Charlie about Nobel prizes) All you math guys are aced out because one of you was good in bed?
Charlie: You're here for the photo enhancements. It's still, you know, enhancing.
Don: We got anything on him?
Megan: Other than the fact that even stalkers don't take good pictures at the DMV?
Charlie: You know, this isn't the first time I've received a love letter. When I published my first article in the American Journal of Mathematics, I was invited to spend the weekend at a bed and breakfast in Santa Barbara.
Larry: Yeah? Did you go?
Charlie: Ah, I was 14. My mother had to break the news to a very embarrassed female professor at Berkeley.
Alan: Yeah, considering that you don't know what to with the girl you do know about.
Larry: For some reason they won't let us move the actual house.
Alan: How inflexible of them.
Charlie: Ah, you know what, it's all right. Ever since they, uh, made the goalie pads smaller, my stats analysis has been thrown off anyway.
Don: You're no fun, man. Hockey is, is, is more than stats.
Charlie: But stats are fun for, for me. (Hears photographers calling out) Why do they want pictures of us?
Don: Just.... (Calls back) He's a famous mathematician!
Charlie: Don't do that.
Don: Hey, get your vogue on, Charlie.
Charlie: Agent Sinclair, you just happen to be talking to two card-carrying members of the North American Sundial Society.
David: (unenthused) Oh. Let the good times roll.
International Episode Titles:
Czech Republic: Posedlost (Obsession)
Czech Republic: May 20, 2009 on TV Nova
Slovakia: October 29, 2009 on JOJ
"In The Waiting Line" by Zero 7.
This episode is rated: TVPG-L.
The model of the house built using various boxes was designed by members of the Numb3rs art department, which is headed up by Production Designer, Bill Eigenbrodt. They worked from photos and diagrams of the real house and construction took nearly half a day.
The scene with the lavendar-scented note from Charlie's secret admirer was added as a tribute to David Krumholtz's fans, who are actually obsessed with his hair.
The song "In the Waiting Line" was performed by Zero 7, which is one of Nick Falacci's favorite music groups.
Larry: They say that Alfred Nobel's mistress had an affair with a very famous mathematician. So, naturally, Nobel wouldn't want to share his prize with his rival.
Larry mentions the alleged rivalry between Alfred Nobel, whose will instituted the Nobel Prizes, and Gösta Mittag-Leffler, the mathematician who would have had a relationship with Nobel's wife.
This legend is discredited though, for the two of them couldn't have had enough contact in their lifetimes, there is no historical evidence, and Nobel never got married after all. More likely, the thought of creating a Math Prize never occurred to Nobel, for he was only concerned about practical sciences.
Megan: ... will experience some form of stalking in their lifetime. It starts with flower ... and then letters ... and then dead bunnies.
This is a reference to the movie Fatal Attraction. At one point in the movie, a pet bunny is killed.
Larry: '31 actually. Dawn of an amazing decade. FDR, Jesse Owens, Dirac's prediction of anti-particles.
In 1928 the physicist Paul Adrien Maurice Dirac found a relativistic quantum-mechanical equation of motion for electrons, the so-called Dirac-Equation. This equation also contains solutions for a particle with the opposite electrical charge of an electron. After some confusion about the meaning of these extra solutions, in 1931, Dirac interpreted them as the not-yet found anti-particle to the electron, the positron. It was first observed in an experiment in 1932, which proved Dirac's interpretation right.
When Charlie was talking about the basketball hoop and all the equations were popping up, one of the equations was the Pythagorean Theorem. The formula for this equation is: a squared plus b squared equals c squared.
While building the mansion model, Charlie mentions Chvátal's Art Gallery Theorem. The theorem states that if the walls of an art gallery are made up of n straight line segments, then the entire gallery can always be supervised by floor(n/3) watchmen placed in corners.
Charlie: A camera has a device called a galvanometer...
A galvanometer (named after Luigi Galvani) is an electromechanical transducer that produces a rotary deflection, through a limited arc, in response to electric current flowing through its coil.
Amita: Very Chitty Chitty Bang Bang.
Chitty Chitty Bang Bang (1968) was film starring Dick Van Dyke about a professor who invents a magic car that can fly.
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