''// 이 pagename은 [[수,number]]와 duplicated - 새로운 pagename?''
{
KmsE:number

'''수, number'''

Rel:
[[숫자,digit]]
[[기수법]] [[기수]] ...

Sub:
[[자연수,natural_number]] N
[[정수,integer]] Z
[[유리수,rational_number]] Q
[[무리수,irrational_number]] I?
[[실수,real_number]] R
[[복소수,complex_number]] C
[[palindromic_number]] =,palindromic_number . palindromic_number
 {
 https://en.wikipedia.org/wiki/Numerical_digit#Palindromic_numbers_and_Lychrel_numbers

 WtEn:palindromic_number
 https://ko.wikipedia.org/wiki/대칭수
 WpEn:Palindromic_number
 https://ja.wikipedia.org/wiki/回文数
 }
[[Lychrel_number]] =,Lychrel_number . Lychrel_number
 {
 https://en.wikipedia.org/wiki/Numerical_digit#Palindromic_numbers_and_Lychrel_numbers

 WtEn:Lychrel_number
 https://en.wikipedia.org/wiki/Lychrel_number
 }
etc

[[무차원수,dimensionless_number]] =무차원수,dimensionless_number =,dimensionless_number 무차원수 dimensionless_number
{
[[https://terms.naver.com/entry.naver?docId=1095134&cid=40942&categoryId=32206]]

cf. [[dimensionless_quantity]] - curr at [[양,quantity]]

WtEn:dimensionless_number

Up: [[무차원,dimensionless]] or [[dimensionlessness]](curr at [[양,quantity]]) [[수,number]]
}

[[기수,cardinal_number]] =,cardinal_number . cardinal_number
 { WtEn:cardinal_number   Ndict:"cardinal number"   "cardinal number"}
[[서수,ordinal_number]] or [[순서수,ordinal_number]] =,ordinal_number . ordinal_number
 {
 WtEn:ordinal_number Ndict:"ordinal number" "ordinal number"
 Rel [[순서,order]]
 }

Cmp
[[무한소,infinitesimal]]


} // 수 number
----
KmsE:case
KmsK:경우

''From [[VG:조합론,combinatorics]]''

[[확률,probability]]을 계산하기 위해서는, [[표본공간,sample_space]]과 각 [[사건,event]] 원소의 개수를 계산해야 함.
 ''(관심있는 그 사건(들)의 '''경우의 수''') ÷ (모든 가능한 '''경우의 수''')가 일어날(happen) 확률?''

'''경우의 수'''의 기본 법칙은 [[곱의_법칙,rule_of_product]].
{
-> RENAMEPAGE to product_rule
곱법칙
곱의법칙
product_rule

... Google:product+rule Google:곱의+법칙 Ndict:곱의+법칙
[[곱,product]]
}

sum_rule
합법칙
합의법칙
{
'''합의 법칙'''
[[합,sum]]
}

= (고딩) 풍산자에 나온 Tips =
경우의 수 문제를 풀다 보면, 두 경우를 더해야 할지 곱해야 할지 헷갈릴 때가 많음.
두 상황을 구분할 줄 알아야 함.
⑴ '완성된 상태'가 될 때까지 곱하고, '완성된 상태'끼리를 더한다.
⑵ 경우를 분석해 '또는'일 땐 더하고 '그리고'일 땐 곱한다.
⑶ 경우를 분석해 '각각에 대하여'일 땐 곱한다.
⑷ '수형도'를 이용하면 곱하는 상황을 명확하게 포착 가능.

----
MKLINK
[[counting]] =,counting =,counting . counting
{
카운팅
세기
계수
셈
...
KmsE:counting
NdEn:counting
Ndict:counting

MKL: [[counter]] =,counter =,counter . counter
{
카운터

Sub:
[[counter_machine]] - curr at [[기계%2Cmachine?action=highlight&value=counter_machine]]

Cmp: [[numbering]] =,numbering =,numbering . numbering
{
넘버링
번호매기기 ??? 순위매기기???
KmsE:numbering

WtEn:numbering

NdEn:numbering
Ndict:numbering
WpEn:Numbering

Compare:
[[열거,enumeration]]
[[인덱싱,indexing]] - about [[인덱스,index]]
[[ordering]] - about [[순서,order]]
[[counting]]

Sub:

[[bit_numbering]] =,bit_numbering =,bit_numbering . bit_numbering
{
bit numbering
비트 넘버링 ?

https://en.wiktionary.org/wiki/bit_numbering x [[Date(2023-08-25T08:55:04)]]

rel. [[비트순서,bit_order]] [[인덱스,index]] indexing ?
https://en.wikipedia.org/wiki/Bit_numbering
}

MKL 넘버 = [[넘버,number]] = [[수,number]]

Ggl:"counting vs numbering"
numbering
}

KmsE:counter
WtEn:counter
NdEn:counter
Ndict:counter
WpEn:Counter

counter
}

----
[[Libre:경우의_수]]
= https://librewiki.net/wiki/경우의_수

Up:
[[경우,case]]
[[수,number]]
{
KmsK:수
KmsE:number

Sub:
[[에르되시_수,Erdos_number]]
[[경우의_수,number_of_cases]] - TORENAME

[[cardinal_number]] - [[카디널리티,cardinality]] - 기수, 개수

 [[집합,set]] [[원소,element]]/member [[counting]]/개수 관련임.

 [[WpSimple:Cardinal_number]]
 = https://simple.wikipedia.org/wiki/Cardinal_number
 [[WpKo:기수_(수학)]]
 = https://ko.wikipedia.org/wiki/기수_%28수학%29
 [[WpEn:Cardinal_number]]
 = https://en.wikipedia.org/wiki/Cardinal_number
 ...
 Ndict:cardinal+number
 Google:cardinal+number
 Bing:cardinal+number

[[ordinal_number]] - 서수, 순서수,
 [[순서,order]] 관련임.
 https://mathworld.wolfram.com/OrdinalNumber.html
 [[WpKo:순서수]]
  = https://ko.wikipedia.org/wiki/순서수
 WpSimple:Ordinal_number
  = https://simple.wikipedia.org/wiki/Ordinal_number
 WpEn:Ordinal_number
  = https://en.wikipedia.org/wiki/Ordinal_number
 ... Google:ordinal+number Naver:ordinal+number

cardinal_vs_ordinal
 Google:cardinal+ordinal+number

transfinite_number =,transfinite_number =,transfinite_number . transfinite_number
 rel. [[ordinal_number]]
 https://mathworld.wolfram.com/TransfiniteNumber.html
 WpSimple:Transfinite_number
  = https://simple.wikipedia.org/wiki/Transfinite_number
 ... Google:transfinite+number Naver:transfinite+number

rel.
[[counting]]

[[완전수,perfect_number]] =완전수,perfect_number =,perfect_number 완전수 perfect_number
{
[[https://terms.naver.com/entry.naver?docId=3569398&cid=58944&categoryId=58970 수학산책 완전수]]
완전수
}

MV TO VG: 수,number
}