MEMELANG
v02 · 17 Oct 2024 · Bri Holt · info@memelang.net
Basic Syntax
Memelang is a notation for efficiently encoding and querying knowledge. In Memelang, the smallest unit of knowledge is a meme. A meme states some idea A
has some relation R
to some other idea B
.
A.R:B = Q; |
A breakdown of each expression:
A | The A starts the statement without punctuation. |
.R | The relation is preceded by a dot. |
:B | The B ends the statement preceded by a colon. |
=Q | Where Q=1 is true and Q=0 is false. |
; | The statement is closed with a semi-colon. |
For example, "Alice's uncle is Bob," where A=Alice
and R=uncle
, and B=Bob
. Memelang encodes this relation thusly:
Alice.uncle:Bob = 1; |
Relation Chains
Memelang supports chained relations, where the relation “uncle” can be expressed as “parent’s brother.”
Alice.uncle:Bob = Alice.parent.brother:Bob; |
Relation Rules
To define general rules, use ==
to indicate equivalence between relations:
.uncle == .parent.brother; |
Inverse Relations
Given that Alice's uncle is Bob, then Bob's niece is Alice. This inverse relation is expressed by swapping A and B and using an apostrophe instad of a dot:
Alice.uncle:Bob = Bob'uncle:Alice; |
Relation chains are inverted by inverting each relation and reversing their order:
'uncle == 'brother'parent; |
All of this notation can be summarized as:
// Given
.uncle == .parent.brother;
// Then these statements are equivalent
Alice.uncle:Bob =
Bob'uncle:Alice =
Alice.parent.brother:Bob =
Bob'brother'parent :Alice;
|
Range Quantities
Q
can represent decimal quantites as well as true/false. When Q
is a quantity, R
is a range relation and B
is a unit.
element.range:unit = quantity; |
For example, "Alice's height is 1.6 meters" is encoded:
Alice.height:meter = 1.6; |
Inverse Ranges
The inverse of a range relation inverts the quantity to 1/Q
. Using the prior example, the inverted relation states that "one meter's height is 1/1.6 Alices."
Alice.height:meter = 1.6; Alice'height:meter = 1/1.6 = 0.625; meter'height:Alice = 1.6; meter.height:Alice = 1/1.6 = 0.625; |
Query Operations
Known memes are stored in the database where they can be queried. A query consists of an incomplete Memelang statement and returns a set of memes. Try the Memelang query demo.
Alice | Finds all memes related to Alice. |
Alice.uncle | Finds all of Alice's uncles. |
.uncle:Bob | Finds all nieces/nephews of Bob. |
Alice:Bob | Finds all direct relationships between Alice and Bob. |
Quantity Comparisons
Comparison operators filter the preceding set according to the Q
values. Herein, M
and N
denote statements such as A.R:B
.
M M=t | Default true, finds memes where Q!=0 .
|
M=Qx | Finds memes where Q equals Qx .
|
M>Qx | Finds memes where Q is greater than Qx .
|
M<Qx | Finds memes where Q is less than Qx .
|
M>=Qx | Finds memes where Q is greater than or equal to Qx .
|
M<=Qx | Finds memes where Q is less than or equal to Qx .
|
M!=Qx | Finds memes where Q does NOT equal Qx .
|
M=f | Finds "false" memes with no matching M or Q=0 .
|
AND Queries
To perform an AND query with multiple conditions, simply separate each condition with a space. This filters for all A
that match every query condition. The following example finds individuals whose uncle is Bob and whose height is less than 1.6 meters:
.uncle:Bob .height:meter<1.6 |
The example below finds individuals whose uncle is Bob and height is less than 1.6 meters, but excludes those whose aunt is Cindy or who attended college:
.uncle:Bob .height:meter<1.6 .aunt:Cindy=f .college=f |
GET Queries
By default, a query returns only the memes relevant to the search criteria. Adding M=g
returns additional memes for the matching A
set. For example, to also return weight:
.uncle:Bob .height:meter<1.6 .aunt:Cindy=f .college=f .weight:kilogram=g |
To get all memes for the matching A
set, use qry.all
:
.uncle:Bob .height:meter<1.6 .aunt:Cindy=f .college=f qry.all |
OR Queries
Memelang allows OR grouping by setting statements equal to tn
where n
is 1, 2, 3... For example, the below query finds A
whose uncle is Bob, and whose aunt is Cindy or Diana:
.uncle:Bob .aunt:Cindy=t1 .aunt:Diana=t1 |
Implication Operations
M => N; | Partial implication: M implies N .
|
M == N; | Mutual implication: M implies N and vice versa. |
.shape:triangle => .internalAngle:degree=180; | Here, every A that is a triangle has internal angles of 180°.
|
Development
Available development tools:
We need you to help us develop Memelang projects such as:
- Database plugins (MySQL, PostgreSQL, SQLite)
- Memelang-specific database systems
- Blockchain integration for immutable storage
- Visualizers and proof assistants
Changelog from Version 01
- Renamed the language from Memetics to Memelang.
- Shortened
true
false
to1
0
ort
f
respectively. - Replaced the term measure relation with range relation.
- Inverting a range relation inverts the quantity.
- Added GET query
M=g
. - Reaplced OR operator
|
with groupingQ=t1
. - Replaced query set junction
&
with whitespaces. - Streamlined features for clairty.
License
Memelang is free for public use under the Memelicense. Patents pending. Copyright 2024 HOLTWORK LLC. Contact info@memelang.net.