OurBigBook About$ Donate
 Sign in Sign up

Past exam of the mathematics course of the University of Cambridge / 2025 / ii / Paper 4 / 4F / c

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2025 ii Paper 4 4F
Created 2026-09-23 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
  • Table of contents
    • Solution c

Solution

 0  0
c
Let
G=({a,b},{S},{S→a},S),G′=({a,b},{T},{T→b},T).
(1)
Both are regular grammars and their variable sets are disjoint. Their ordinary concatenation grammar adds a new rule
S0​→ST.
(2)
This rule has two variables on its right-hand side, so it is not right-linear. Thus this is an explicit instance in which the concatenation grammar need not be regular.

 Ancestors (10)

  1. 4F
  2. Paper 4
  3. ii
  4. 2025
  5. Past exam of the mathematics course of the University of Cambridge
  6. Mathematics course of the University of Cambridge
  7. Course of the University of Cambridge
  8. University of Cambridge
  9. List of universities
  10.  Home

 View article source

 Discussion (0)

New discussion

There are no discussions about this article yet.

 Articles by others on the same topic (0)

There are currently no matching articles.
  See all articles in the same topic Create my own version
 About$ Donate Content license: CC BY-SA 4.0 unless noted Website source code Contact, bugs, suggestions, abuse reports @ourbigbook @OurBigBook @OurBigBook