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### Is the verifying if a math equation is reasonable called “proof” or “justification” or both or something else?

this question comes from this post is the whole procedure called "proof" or "justification" or both or something else?
59 views

### What is an equation that consists of a proportionality symbol called? [closed]

When I want to refer to an equation similar to this image, what term should I use? Is it correct to say "Equation 3", although the equation contains a proportionality symbol?
114 views

### polynomial time in?

Related to exponential in terms of? (nonetheless different from it): Assume that you have an algorithm (producing gizmos) whose inputs are three numbers t, d, and h, which are interpreted by a human ...
65 views

### how to formulate/name a specific simple math operation in a formal way?

I wonder how to formulate/name a specific simple math operation. For instance, consider the following equation/indentity: (Eq.1) y=a+b+c where a is an effect, b is an effect and c is ...
237 views

### Should I use ratio, rate, fold, or increase?

The amounts of ingredients a, b and c in A (solution) were 1, 2 and 3, respectively. I have prepared B, C and D solutions with the ingredients as below. The amounts were multiplied by 1.5 for ...
472 views

### Is there a standard way to read aloud fractions?

Common fractions have standard English equivalents, e.g.: "One half" for 1/2 "Three quarters" for 3/4 But is there a preferred way to read aloud non-standard fractions? The closest way I know of is ...
1k views

### extrapolate vs conjecture

Are these verbs can used interchangeably in the sense of "to guess based on some information". The remains are conjectured to be thousands of years old. He conjectured that the company would ...
5k views

### In math, round down or round up

In math a number can be 'rounded' (sounds strange) up or down. For example if I want to round up to the next whole number (the 2.4 gets 3). How do I express in English that I always want to round ...
78 views

### Difference between “outlier” and “offset”

When talking about deviated points (values) from a line formed by points (values) changing in a consistent way in a graph, which word better describe them: outliers or offsets? What is the difference ...
95 views

### Defining a ball in mathematics

Which are appropriate phrases to define a ball? Let \$B\$ be the open ball of radius \$r\$ centered at \$x\$. Let \$B\$ be the open ball of radius \$r\$ around \$x\$. Let \$B\$ be the open ball of radius \$r\$ about ...
441 views

### Positive probability

Assume that P(A) >0. Can one express this as follows? The event A has positive probability; The event A is of positive probability; The probability of A is positive?
250 views

### Words choice in math related question: “Is this notation [ valid / correct ] for [ showing / expressing ] this summation ?”

I was studying math and while doing some summations I made a notation and I don't know if it's valid/ correct so I was about to ask that on the StackExchange Math Community when I realized that I didn'...
7k views

### Which way: One and one ARE two? One and one IS two?

Which verb is grammatically correct when used to describe addition? One and one are two. One and one is two.