Bridi

Definition and stakes

John Woldemar Cowan,  The Complete Lojban Language (2016)

“ The same part of speech is used to represent the relationship. In formal logic this whole structure is called a “predication”; in Lojban it is called a bridi, and the central part of speech is the selbri. Logicians refer to the things thus related as “arguments”, while Lojbanists call them sumti. These Lojban terms will be used for the rest of the book.
In a relationship, there are a definite number of things being related. In English, for example, “give” has three places: the donor, the recipient and the gift. For example:
Example 2.4 John gives Sam the book.
”
Source: Wikisource

John Woldemar Cowan,  The Complete Lojban Language — Chapter 2 - The concept of the bridi (1997)

“ There is a problem when we want to say “The fast one is talking.” The “obvious” translation “le sutra tavla” turns out to mean “the fast talker”, and has no selbri at all. To solve this problem we can use the word “cu”, which so far has always been optional, in front of the selbri.
The word “cu” has no meaning, and exists only to mark the beginning of the selbri within the bridi, separating it from a previous sumti. It comes before any other part of the selbri, including other cmavo like “se” or “te”.
”
Source: Wikisource

John Woldemar Cowan,  The Complete Lojban Language — Chapter 2 - The concept of the bridi (1997)

“ See Chapter 6. selbri: logical predicate; the core of a bridi; the word or words specifying the relationship between the objects referred to by the sumti. See Chapter 5. cmavo: one of the Lojban parts of speech; a short word; a structural word; a word used for its grammatical function. brivla: one of the Lojban parts of speech; a content word; a predicate word; can function as a selbri; is a gismu, a lujvo, or a fu'ivla. See Chapter 4. gismu: a root word; a kind of brivla; has associated rafsi. See Chapter 4. lujvo: a compound word; a kind of brivla; may or may not appear in a dictionary ”
Source: Wikisource

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