ጥሬ ኮዱን ለየሒሳብ ምልክቶች ለማየት

የመደመር ምልክት፡ ደምሮ መቀንስ አሪትሜት።
የመቀነስ ምልክት፡ ቀንሶ መደምር ፡ ወይም መደመርና መቀነስ
የማባዛት ምልክት፤
የማካፈል ምልክት።
የእኩሌታ ምልክት፡
የቅንፍ ምልክት፡
የእኩሌታ ምልክት.. ሲሜትራዊ ዝምድና፤ ሲሜትራዊ ሪሊሸን።  እኩል ነው.. እኩል ያልሆነ... ያንሳል.....እኩልነትን የሚያፈርስ ፡ እኩሌታ አፍራሽ.. ኢ-እኩሌታ  ....እኩሌታው ይጸናል--- ከ ያነሰ.. ከ ..የበለጠ
የስነስርአት ቲዮሪ  ጽንሰሃሳብ ፡ የትክክልነት ታህታዊ ግሩፕ፡ በግምት እኩል ይሆናል .... በግምት እኩል ያልሆነ፡ ዞሮ ገጠም፡ ከ-እጂግ ያንሳል ። ከዚህ እጂግ ይበልጣል። የስነስርአት ቲዮሪ። ይቀጥላል...


{| class="wikitable"
|-
! ምልክት
! ስም
! ሲነበብ
! ትርጉም
! ምሳሌ
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">=</div>
| [[እኩል]]
| እኩል ነው፣ እኩል ይሆናል
| x=y, x እና  y  አንድ አይነት ዋጋን ይወክላሉ
| 2+2=4
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">≡</div>
| definition
| is defined as
| If x≡y, x is defined as another name of y
| (a+b)<sup>2</sup>≡a<sup>2</sup>+2ab+b<sup>2</sup>
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">≈</div>
| approximately equal
| is approximately equal to
| If x≈y, x and y are almost equal.
| √2≈1.41
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">≠</div>
| inequation
| does not equal, is not equal to
| If x≠y, x and y do not represent the same value or thing.
| 1+1≠3
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;"><</div>
| rowspan=4|<div style="font-size:100%;">strict [[inequality]]</div>
| is less than
| If x<y, x is less than y.
| 4<5
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">></div>
| is greater than
| If x>y, x is greater than y.
| 3>2
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">≪</div>
| is much less than
| If x≪y, x is much less than y.
| 1≪999999999
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">≫</div>
| is much greater than
| If x≫y, x is much greater than y.
| 88979808≫0.001
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">≤</div>
| rowspan=2|<div style="font-size:100%;">inequality</div>
| is less than or equal to
| If x≤y, x is less than or equal to y.
| 5≤6 and 5≤5
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">≥</div>
| is greater than or equal to
| If x≥y, x is greater than or equal to y.
| 2≥1 and 2≥2
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">∝</div>
| [[proportionality]]
| is proportional to
| If x∝y, then y=kx for some [[constant]] k.
| If y=4x then y∝x and x∝y
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">+</div>
| [[addition]]
| plus
| x+y is the sum of x and y.
| 2+3=5
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">-</div>
| [subtraction]
| minus
| x-y is the subtraction of y from x
| 5-3=2
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">×</div>
| rowspan=2|[[multiplication]]
| rowspan=2|times
| x×y is the multiplication of x by y
| 4×5=20
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">·</div>
| x·y is the multiplication of x by y
| 4·5=20
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">÷</div>
| rowspan=2|[[division]]
| rowspan=2|divided by
| rowspan=2|x÷y or x/y is the division of x by y
| 20÷4=5 and 20/4=5
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">/</div>
| 20/4=5
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">±</div>
| plus-minus
| plus or minus
| x±y means both x+y and x-y
| The equation 3±√9 has two solutions, 0 and 6.
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">∓</div>
| minus-plus
| minus or plus
| 4±(3∓5) means both 4+(3-5) and 4-(3+5)
| 6∓(1±3)=2 or 4
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">√</div>
| [[square root]]
| square root
| √x is a number whose square is x.
| √4=2 or -2
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">∑</div>
| summation
| sum over … from … to … of, sigma
| <math>\sum_{k=1}^{n}{x_k}</math> is the same as x<sub>1</sub>+x<sub>2</sub>+x<sub>3</sub>+x<sub>k</sub>
| <math>\sum_{k=1}^{5}{k+2}=3+4+5+6+7=25</math>
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">∏</div>
| multiplication
| product over … from … to … of
| <math>\prod_{k=1}^{n}{x_k}</math> is the same as x<sub>1</sub>×x<sub>2</sub>×x<sub>3</sub>×x<sub>k</sub>
| <math>\prod_{k=1}^{5}{k}</math>=1×2×3×4×5=120
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">!</div>
| [[factorial]]
| factorial
| n! is the product 1×2×3...×n
| 5!=1×2×3×4×5=120
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">⇒</div>
| material implication
| implies
| A⇒B means that if A is true, B must also be true, but if A is false, B is unknown.
| x=3⇒x<sup>2</sup>=9, but x<sup>2</sup>=9⇒x=3 is false, because x could also be -3.
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">⇔</div>
| material equivalence
| if and only if
| If A is true, B is true and if A is false, B is false.
| x=y+1⇔x-1=y
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">|…|</div>
| absolute value
| absolute value of
| <nowiki>|x|</nowiki> is the distance along the real line (or across the complex plane) between x and zero
| <nowiki>|5|=5 and |-5|=5</nowiki>
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;"><nowiki>||</nowiki></div>
| [[parallel (geometry)|parallel]]
| is parallel to
| If A<nowiki>||</nowiki>B then A and B are parallel
| 
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">⊥</div>
| perpendicular
| is perpendicular to
| If A⊥B then A is perpendicular to B
| 
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">≅</div>
| [[congruence]]
| is congruent to
| If A≅B then shape A is congruent to shape B (has the same [[Unit of measurement|measurements]])
| 
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">φ</div>
| [[golden ratio]]
| golden ratio
| The golden ratio is an [[irrational number]] equal to (1+√5)÷2 or approximately 1.6180339887.
| 
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">∞</div>
| [[infinity]]
| infinity
| ∞ is a number greater than every real number.
| 
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">∈</div>
| rowspan=2|[[set theory|set membership]]
| is an element of
| a∈S means that a is an element of the set S
| 3.5∈ℝ, 1∈ℕ, 1+''i''∈ℂ
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">∉</div>
| is not an element of
| a∉S means that a is not an element of the set S
| 2.1∉ℕ, 1+''i''∉ℝ
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">{,}</div>
| Set brackets
| the set of
| {a,b,c} is the set consisting of a, b, and c
| ℕ={1,2,3,4,5}
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">ℕ</div>
| [[Natural numbers]]
| N
| ℕ denotes the set of natural numbers(1,2,3,4,5...)
|
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">ℤ</div>
| [[Integers]]
| Z
| ℤ denotes the set of integers (-3,-2,-1,0,1,2,3...)
| 
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">ℚ</div>
| [[Rational numbers]]
| Q
| ℚ denotes the set of rational numbers (numbers that can be written as a fraction a/b where a∈ℤ, b∈ℕ)
| 8.323∈ℚ, 7∈ℚ, π∉ℚ
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">ℝ</div>
| [[Real numbers]]
| R
| ℝ denotes the set of real numbers
| π∈ℝ, 7∈ℝ, √(-1)∉ℝ
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">ℂ</div>
| [[Complex numbers]]
| C
| ℂ denotes the set of complex numbers
| √(-1)∈ℂ
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">x̄</div>
| [[Mean (statistics)|Mean]]
| bar, overbar
| x̄ is the mean (average) of x<sub>i</sub>
| if x={1,2,3} then x̄=2
|-
| bgcolor=#ffff99 align=center|<div style="font-size:200%;">x̄</div>
| complex conjugate
| the complex conjugate of x
| If x=a + bi, then x̄=a - bi where i=√(-1)
| x=-4 + 5.3i, x̄=-4 - 5.3i
|}

[[መደብ:ሒሳብ]]