# Zero Definition and 15 Discussions

Gonzalo Raúl Barrios Castro (born April 17, 1995), known by his gamertag ZeRo, is a Chilean former professional Super Smash Bros. player and streamer. He was considered the best Super Smash Bros. for Wii U player in the world throughout his career, with a record-breaking 56 consecutive tournament wins in the game from November 2014 to October 2015, including high-profile tournaments such as EVO 2015 and The Big House 5. Prior to the release of Super Smash Bros. for Wii U, he was a top ranked Super Smash Bros. Brawl and Project M player. His best known characters are Diddy Kong in Super Smash Bros. for Wii U, Pit in Project M, Meta Knight in Brawl, and Fox in Melee. He is the only player to have earned more than US\$100,000 playing Super Smash Bros. for Wii U competitively.
Barrios retired from professional competition in July 2020 following allegations of sexting two minors in 2014, which also led to Barrios' sponsors cutting ties with him. Barrios later publicly admitted to the allegations.

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1. ### Question about net work and displacement

I know that by physics definition if displacement is zero, work is zero. However, if I push an object 5 m to the east, and then move to the other side of the object and push it 5 m back to the west. I think in this case I have always done positive work on the object and hence the total work...
2. ### Solving a System of Equations via the Matrix Method

I have equation system: x + y + z - a*k = 0 -b*x + y + z = 0 -c*y + z = 0 -d*x + y = 0 where: a, b, c, d = const. Have to find: x, y, z, k Attempt of solution: I create Matrix A with coefficients; Matrix B - Solutions (Zeros) and Matrix X - variables. When I try to use Cramer's rule -...
3. ### Finding when acceleration is zero

Homework Statement A block of mass 2.42kg is accelerated across a rough surface by a rope passing over a pulley, as shown in the figure below. The tension in the rope is 13.9N, and the pulley is 12.3cm above the top of the block. The coefficient of kinetic friction is 0.395. A: 2.28 m/s^2...
4. ### I 10 different classes of ratio

In the book 'ZERO THE BIOGRAPHY OF A DANGEROUS IDEA' Charles Seife says, "Because ratios were the key to understanding nature, the Pythagoreans and later Greek Mathematicians spent much of their energy investigating their properties. Eventually, they categorized proportions into 10 different...
5. ### I What are the limits of the boundaries for the Schrödigner equation

If one considers the quantized levels of E, for the solutions to the Schrödinger eqn,, then I am wondering: what are the lowest possible energies that can occur for the Schrödinger eqn? I take the highest possible energy is at the classical limit, but is the zero-point energy the absolute...
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### I What does a zero-value of the Born-condition mean?

Hi, I was wondering what is the physical meaning of these integrals: $$\int_{-\infty}^{\infty} \psi \psi^* dx = 0$$ $$\int_{-\infty}^{\infty} \psi x \psi^* dx = 0$$ \int_{-\infty}^{\infty} \psi p \psi^* dx = NA...
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### A Does zero exist in the energy term?

Hi, did the energy of the universe, right before big bang equal to zero? And if so, does zero as zero-point energy in relativistic theory and quantum mechanics make any sense? If this is not possible, are there any models, including the standard model, SUSY or QFT which consider ground state...
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### A Is there an alternative form of the zero point energy?

Hi, is there an alternative form of the zero point energy for free electrons, where there is no space interval L to be quantized in? The zero point energy for electrons in an atom can be simplified to a variant where Z^2 is present in the nominator, however, these are not free electrons. Can a...
9. ### I I think I solved divisions by zero

First of all, I didn't know where to put this in general math or differential equations. Let's start with the basic, x/0 = α. Where α is every number and decimal number from -∞ to +∞, by rearranging, we get x = 0α, x= 0, therefore only 0/0 = α. Now, we can integrate this with graphs. Take the...
10. ### Solve a polynomial function

Homework Statement Given the polynomial function ##x^4+x^3+2x^2+4=0## solve it if you know that it has at least one complex zero whose real part equals the complex part. Homework Equations 3. The Attempt at a Solution [/B] My guess is that if this function has one complex zero it must have a...
11. ### B Dividing an equation by a variable

Hello guys, I am confused about when we can multiply and divide by the variable. I know the if zero is hidden as a factor then we can not divide or multiply. eg. x/2x+1=0 are we allowed to divide both side 2x+1. Although zero is hidden value of x, there are no other ways to solve this...
12. ### I What is the opposite of epsilon

Is there a notation for the opposite of epsilon (infinitesimal) in the way that infinity is the opposite of zero?
13. ### Instantaneous center of velocity for a inverted slider crank

Homework Statement [/B] Find the instantaneous centers of the linkage below. Homework Equations # of ICs = n(n-1) / 2 The Attempt at a Solution [/B] From the equation above, there are 4(4-1)/2 = 6 ICs in this linkage. But one thing I don't understand is how there are 4 links when 2 and 3...
14. ### Simple Harmonic Oscillator Zero Probability Points

Hi, What is the physical meaning of zero probability of finding a particle in the square of the Quantum SHO wave function? the particle is supposed to oscillate about the equilibrium position, how would it go from an end point to the other end point without passing by certain points? Could the...
15. ### U(2) charge commutator being zero

Hi, For SU(2) I can have that all Noether charges commute with one of the charges as one of the generators of the Lie algebra is the identity. Can somebody explain me how this is related to the properties of SU(2)? Charges can be considered to be generators of the transformation. So if this...