Set Theory, Logic, Probability, Statistics Forum

Post thread
Join experts in discussion on Set Theory, Logic, Probability, Statistics topics. Fundamentals in Set theory, logic and proofs. Probability and statistics also. Homework help is available.
High School How to prove the associative law of symmetric difference?
  • cleaf
  • · Replies 2 ·
Replies
2
Graduate Curse of dimensionality - what is it that grows?
  • schniefen
  • · Replies 12 ·
Replies
12
Undergrad What are the statistics of probability of dying today vs age?
  • iVenky
  • · Replies 20 ·
Replies
20
Find Proofs for the following 5 propositional logic statements
  • josephmary
  • · Replies 2 ·
Replies
2
Basic Inequality Prove: $A\leq B\wedge B\leq A \Rightarrow A=B$
  • solakis1
  • · Replies 2 ·
Replies
2
Undergrad Blinder–Oaxaca decomposition confusion
  • vandanak
  • · Replies 2 ·
Replies
2
Find total number of republications
  • evinda
  • · Replies 22 ·
Replies
22
Help with Converting Sentences to FOL
  • hanzla
  • · Replies 8 ·
Replies
8
Rules of Inference: Get Help with Hypothesis 1 & 2
  • Eluki
  • · Replies 3 ·
Replies
3
How Do We Find the Logical Negation of Statements?
  • mathmari
  • · Replies 6 ·
Replies
6
Prove that the statement is always true using the rules of boolean algebra
  • mathmari
  • · Replies 9 ·
Replies
9
Undergrad A claim in measure theory which seems flawed to me
  • MathematicalPhysicist
  • · Replies 15 ·
Replies
15
Undergrad Why Not P(A)*(1-P(A)) for Probability?
  • nomadreid
  • · Replies 5 ·
Replies
5
Can We Prove the Inductive Set Contains Only Natural Numbers?
  • mathmari
  • · Replies 10 ·
Replies
10
High School Understanding Modus Tollens: Deductive Reasoning with an Example
  • albinoblanke
  • · Replies 4 ·
Replies
4
Undergrad Estimating Gene Mutation Proportion: A & B Approaches
  • schniefen
  • · Replies 2 ·
Replies
2
COVID-19 in a Small Town: Probability of Infection
  • laprec
  • · Replies 1 ·
Replies
1
Solving the Fractional Knapsack Problem - Wave and Thinking
  • evinda
  • · Replies 1 ·
Replies
1
Undergrad What would the pdf look like for 'N' chess computers with the same rating
  • iVenky
  • · Replies 16 ·
Replies
16
Master Theorem-Relation of the two functions
  • evinda
  • · Replies 2 ·
Replies
2
Graduate Good Examples of Causation does not Imply Correlation
  • WWGD
  • · Replies 58 ·
2
Replies
58
High School Introduction to logic - website?
  • entropy1
  • · Replies 2 ·
Replies
2
High School Probability of n events over a time period
  • MrOd67
  • · Replies 2 ·
Replies
2
De Morgan Rules - Logical statements
  • mathmari
  • · Replies 11 ·
Replies
11
Draw a NAND-gate to get that output
  • mathmari
  • · Replies 16 ·
Replies
16
Compose Functions: True/False?
  • lemonthree
  • · Replies 1 ·
Replies
1
Satisfying S∘S=S: What Are The Conditions?
  • lemonthree
  • · Replies 7 ·
Replies
7
How to calculate conditional expectation E[g(x) | x>= Q] for x ~ exp(1)
  • user_01
  • · Replies 2 ·
Replies
2
Translate the statements into set inclusion
  • mathmari
  • · Replies 5 ·
Replies
5
Log likelihood and Maximum likelihood
  • cajswn
  • · Replies 1 ·
Replies
1
Is Every Statement Correct in Defining an Onto Function?
  • lemonthree
  • · Replies 6 ·
Replies
6
Graduate Frequency estimation - Minimising the number of samples
  • f95toli
  • · Replies 12 ·
Replies
12
How many reflexive relations on set A with 4 elements?
  • lemonthree
  • · Replies 3 ·
Replies
3
Undergrad Supremum proof & relation to Universal quantifier
  • CGandC
  • · Replies 5 ·
Replies
5
Undergrad Quine's New Foundations and the concept of a Universal Set
  • madness
  • · Replies 6 ·
Replies
6
How Do You Calculate a Z Score for Toothpaste Effectiveness Testing?
  • altitus
  • · Replies 1 ·
Replies
1
How Many Elements Are Found in Each Mathematical Set?
  • lemonthree
  • · Replies 5 ·
Replies
5
Undergrad Is There a Simpler Way to Calculate the Probability of a Needle Crossing a Line?
  • LCSphysicist
  • · Replies 3 ·
Replies
3
High School Stats: Determining significance level in problem
  • physicslady123
  • · Replies 5 ·
Replies
5
Undergrad Distributivity/Inheritance of Max Likelihood Estimators
  • WWGD
  • · Replies 19 ·
Replies
19
Word problem for winning percentage
  • Achi_kun
  • · Replies 1 ·
Replies
1
Undergrad Principal Component Analysis with dependent variable?
  • HAYAO
  • · Replies 3 ·
Replies
3
Undergrad Two vectors and two perpendicular lines
  • LCDF
  • · Replies 20 ·
Replies
20
Combinations / Sets of objects
  • arno100
  • · Replies 1 ·
Replies
1
Undergrad Probability that two points are on opposite sides of a line
  • LCDF
  • · Replies 11 ·
Replies
11
Undergrad How to Get Final Fisher Matrix from 2 Matrices
  • fab13
  • · Replies 11 ·
Replies
11
High School Solving a RNG Problem: What is the Expected Value of N?
  • {???}
  • · Replies 2 ·
Replies
2
Undergrad Failure rate for a uniformly distributed variable
  • Mark J.
  • · Replies 3 ·
Replies
3
Summation and product notation rules
  • lemonthree
  • · Replies 1 ·
Replies
1
Undergrad Tell me how scientific journals scrutinize statistical work
  • phoenix95
  • · Replies 3 ·
Replies
3
Undergrad Radon-Nikodym Derivative and Bayes' Theorem
  • Jatex
  • · Replies 1 ·
Replies
1
Graduate Dense set vs no isolating points
  • SchroedingersLion
  • · Replies 3 ·
Replies
3
Real Estate math word problem help
  • jmathdisinclined
  • · Replies 3 ·
Replies
3
High School Simple probability question: Suppose P(B|A)=1. Does that mean that P(A|B)=1?
  • entropy1
  • · Replies 34 ·
2
Replies
34
Undergrad Cardinality of Unions of Powersets
  • Xavier Labouze
  • · Replies 21 ·
Replies
21
What is the final pressure of helium and neon gas mixture in this case?
  • WMDhamnekar
  • · Replies 1 ·
Replies
1
High School Different sample methods in statistics
  • i_love_science
  • · Replies 5 ·
Replies
5
Undergrad Direction of logical implication in bijectively related sets
  • entropy1
  • · Replies 5 ·
Replies
5
Undergrad Expected value of a variable and its reciprocal
  • jeremy22511
  • · Replies 19 ·
Replies
19
High School Are proofs needed for definitions? Conditional probabilities
  • jeremy22511
  • · Replies 4 ·
Replies
4
Undergrad Proving Probability of Union with Indicator Variables in Three Events
  • Brooklyn
  • · Replies 4 ·
Replies
4
High School If and only if versus if .... then
  • inthenickoftime
  • · Replies 2 ·
Replies
2
Understanding Positive Asymmetry in Price Distribution
  • evinda
  • · Replies 1 ·
Replies
1
Relative Variance: Calories vs Sugar
  • evinda
  • · Replies 1 ·
Replies
1
Undergrad Linear regression with error term
  • Kyouran
  • · Replies 8 ·
Replies
8
Undergrad Understanding different Monte Carlo approximation notations
  • schniefen
  • · Replies 7 ·
Replies
7
How to Efficiently Distribute Change Using Five and One Dollar Bills
  • moodtl32
  • · Replies 1 ·
Replies
1
Undergrad Conditional distribution of geometric series
  • user158675
  • · Replies 1 ·
Replies
1
Can Predicate Properties Be Neither True nor False?
  • lemonthree
  • · Replies 1 ·
Replies
1
Undergrad How do I compute the cumulative probabilites of multiple bell curves?
  • k_squared
  • · Replies 2 ·
Replies
2
Graduate Union of sets and indexed sets question from Vellerman
  • CGandC
  • · Replies 4 ·
Replies
4
Undergrad Question regarding quantifier statement
  • CGandC
  • · Replies 10 ·
Replies
10
Undergrad How do you calculate the probability without using the complement?
  • tjosan
  • · Replies 15 ·
Replies
15
Undergrad How Does Money Redistribution Affect Poverty Levels in a Simulated Economy?
  • kairama15
  • · Replies 28 ·
Replies
28
Sequence of b_{k} with Explicit Formula: Proving by Math Induction
  • hkhgg
  • · Replies 2 ·
Replies
2
High School The terminology "G is only a function of...."
  • Stephen Tashi
  • · Replies 3 ·
Replies
3
High School Another consequence of Cantor's diagonal argument
  • Warp
  • · Replies 43 ·
2
Replies
43
Undergrad Computer languages as examples in formal logic
  • Stephen Tashi
  • · Replies 40 ·
2
Replies
40
Graduate Feature Selection, Information Gain and Information Entropy
  • WWGD
  • · Replies 5 ·
Replies
5
Undergrad How to prove the Cauchy distribution has no moments?
  • Neothilic
  • · Replies 5 ·
Replies
5
Undergrad How to find the moments using the characteristic function?
  • Neothilic
  • · Replies 5 ·
Replies
5
Undergrad Does the definition of cardinality assume distinguishability?
  • Stephen Tashi
  • · Replies 9 ·
Replies
9
High School One thing I don't understand about Cantor's diagonal argument
  • Warp
  • · Replies 55 ·
2
Replies
55
Undergrad An Alternative Variance Formula
  • mathman
  • · Replies 5 ·
Replies
5
Undergrad Are there unprovable theorems with unprovable unprovability?
  • Gjmdp
  • · Replies 37 ·
2
Replies
37
Graduate The meaningfulness item on math probability
  • boby
  • · Replies 14 ·
Replies
14
High School A given integer can be written in how many different ways?
  • kent davidge
  • · Replies 11 ·
Replies
11
Graduate Can this be rearranged to solve?
  • jeff91
  • · Replies 5 ·
Replies
5
Undergrad Looking for a formula (how many possible connections between 2 sets of objects?)
  • Steven Ellet
  • · Replies 14 ·
Replies
14
High School Statistics Help : Hypothesis Testing
  • girlwhoneedsmathhelp
  • · Replies 2 ·
Replies
2
Undergrad Limit inf < Limit superior(proof)
  • EinsteinKreuz
  • · Replies 5 ·
Replies
5
High School Choosing the number of trials when the data stream is unlimited
  • Roger Dodger
  • · Replies 24 ·
Replies
24
High School Dice calculation of p(7), two different values?
  • bahamagreen
  • · Replies 32 ·
2
Replies
32
Attempting to add logic mathematics to a college paper - need your input
  • Furthark
  • · Replies 2 ·
Replies
2
Mosteller lectures - available online?
  • Stephen Tashi
  • · Replies 1 ·
Replies
1
Graduate Optimal strategy for repeated coin toss game - with possible bias
  • The Investor
  • · Replies 20 ·
Replies
20
For which n is the term an integer & Calculate the equivalence
  • mathmari
  • · Replies 4 ·
Replies
4
What is the Pigeonhole Principle Problem in the African Rally?
  • Carl1
  • · Replies 2 ·
Replies
2
Proof by induction? No Idea what I should do :(
  • FriendlyCashew
  • · Replies 4 ·
Replies
4
Undergrad 'Conservative' p-values adjusted
  • Schwann
  • · Replies 1 ·
Replies
1