Internal Description of Plus Construction [on hold]

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I have a lot of troubles trying to understand what it means with 'internal description' in this post of nlab https://ncatlab.org/nlab/show/plus+construction+on+presheaves about plus construction. In the references I haven't found anything. Thanks!




category-theory sheaf-theory topos-theory




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put on hold as off-topic by Derek Elkins, Tyrone, Arnaud Mortier, Shailesh, Brahadeesh 2 days ago


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Derek Elkins, Tyrone, Arnaud Mortier, Shailesh, Brahadeesh
If this question can be reworded to fit the rules in the help center, please edit the question.








  • 1




    Did you follow the link on that page to internal languages? (Or actually it redirects to internal logic.) If you don't elaborate on what is giving you trouble, it's going to be hard to provide useful direction.
    – Derek Elkins
    Aug 2 at 0:03











  • Have you seen Section 6.4 of these notes of mine? Are you familiar with the internal language? I'd love to help you if you're a bit more specific. :-)
    – Ingo Blechschmidt
    Aug 2 at 22:34










  • @IngoBlechschmidt this notes are amazing! thanks again! basically what I haven't understand well is which is the role of the Lawvere-Tierney top. in the plus construction. The nlab post are far from clear in this sense. I have a presheaf and a Law-Tier so I'm trying to find the more 'computable' sheafification. :)
    – Nicolas Medina Sanchez
    Aug 3 at 23:13














up vote
0
down vote

favorite












I have a lot of troubles trying to understand what it means with 'internal description' in this post of nlab https://ncatlab.org/nlab/show/plus+construction+on+presheaves about plus construction. In the references I haven't found anything. Thanks!




category-theory sheaf-theory topos-theory




share|cite|improve this question











put on hold as off-topic by Derek Elkins, Tyrone, Arnaud Mortier, Shailesh, Brahadeesh 2 days ago


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Derek Elkins, Tyrone, Arnaud Mortier, Shailesh, Brahadeesh
If this question can be reworded to fit the rules in the help center, please edit the question.








  • 1




    Did you follow the link on that page to internal languages? (Or actually it redirects to internal logic.) If you don't elaborate on what is giving you trouble, it's going to be hard to provide useful direction.
    – Derek Elkins
    Aug 2 at 0:03











  • Have you seen Section 6.4 of these notes of mine? Are you familiar with the internal language? I'd love to help you if you're a bit more specific. :-)
    – Ingo Blechschmidt
    Aug 2 at 22:34










  • @IngoBlechschmidt this notes are amazing! thanks again! basically what I haven't understand well is which is the role of the Lawvere-Tierney top. in the plus construction. The nlab post are far from clear in this sense. I have a presheaf and a Law-Tier so I'm trying to find the more 'computable' sheafification. :)
    – Nicolas Medina Sanchez
    Aug 3 at 23:13












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I have a lot of troubles trying to understand what it means with 'internal description' in this post of nlab https://ncatlab.org/nlab/show/plus+construction+on+presheaves about plus construction. In the references I haven't found anything. Thanks!




category-theory sheaf-theory topos-theory




share|cite|improve this question











I have a lot of troubles trying to understand what it means with 'internal description' in this post of nlab https://ncatlab.org/nlab/show/plus+construction+on+presheaves about plus construction. In the references I haven't found anything. Thanks!





category-theory sheaf-theory topos-theory





share|cite|improve this question










share|cite|improve this question




share|cite|improve this question









asked Aug 1 at 23:59









Nicolas Medina Sanchez

1




1




put on hold as off-topic by Derek Elkins, Tyrone, Arnaud Mortier, Shailesh, Brahadeesh 2 days ago


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Derek Elkins, Tyrone, Arnaud Mortier, Shailesh, Brahadeesh
If this question can be reworded to fit the rules in the help center, please edit the question.




put on hold as off-topic by Derek Elkins, Tyrone, Arnaud Mortier, Shailesh, Brahadeesh 2 days ago


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – Derek Elkins, Tyrone, Arnaud Mortier, Shailesh, Brahadeesh
If this question can be reworded to fit the rules in the help center, please edit the question.







  • 1




    Did you follow the link on that page to internal languages? (Or actually it redirects to internal logic.) If you don't elaborate on what is giving you trouble, it's going to be hard to provide useful direction.
    – Derek Elkins
    Aug 2 at 0:03











  • Have you seen Section 6.4 of these notes of mine? Are you familiar with the internal language? I'd love to help you if you're a bit more specific. :-)
    – Ingo Blechschmidt
    Aug 2 at 22:34










  • @IngoBlechschmidt this notes are amazing! thanks again! basically what I haven't understand well is which is the role of the Lawvere-Tierney top. in the plus construction. The nlab post are far from clear in this sense. I have a presheaf and a Law-Tier so I'm trying to find the more 'computable' sheafification. :)
    – Nicolas Medina Sanchez
    Aug 3 at 23:13












  • 1




    Did you follow the link on that page to internal languages? (Or actually it redirects to internal logic.) If you don't elaborate on what is giving you trouble, it's going to be hard to provide useful direction.
    – Derek Elkins
    Aug 2 at 0:03











  • Have you seen Section 6.4 of these notes of mine? Are you familiar with the internal language? I'd love to help you if you're a bit more specific. :-)
    – Ingo Blechschmidt
    Aug 2 at 22:34










  • @IngoBlechschmidt this notes are amazing! thanks again! basically what I haven't understand well is which is the role of the Lawvere-Tierney top. in the plus construction. The nlab post are far from clear in this sense. I have a presheaf and a Law-Tier so I'm trying to find the more 'computable' sheafification. :)
    – Nicolas Medina Sanchez
    Aug 3 at 23:13







1




1




Did you follow the link on that page to internal languages? (Or actually it redirects to internal logic.) If you don't elaborate on what is giving you trouble, it's going to be hard to provide useful direction.
– Derek Elkins
Aug 2 at 0:03





Did you follow the link on that page to internal languages? (Or actually it redirects to internal logic.) If you don't elaborate on what is giving you trouble, it's going to be hard to provide useful direction.
– Derek Elkins
Aug 2 at 0:03













Have you seen Section 6.4 of these notes of mine? Are you familiar with the internal language? I'd love to help you if you're a bit more specific. :-)
– Ingo Blechschmidt
Aug 2 at 22:34




Have you seen Section 6.4 of these notes of mine? Are you familiar with the internal language? I'd love to help you if you're a bit more specific. :-)
– Ingo Blechschmidt
Aug 2 at 22:34












@IngoBlechschmidt this notes are amazing! thanks again! basically what I haven't understand well is which is the role of the Lawvere-Tierney top. in the plus construction. The nlab post are far from clear in this sense. I have a presheaf and a Law-Tier so I'm trying to find the more 'computable' sheafification. :)
– Nicolas Medina Sanchez
Aug 3 at 23:13




@IngoBlechschmidt this notes are amazing! thanks again! basically what I haven't understand well is which is the role of the Lawvere-Tierney top. in the plus construction. The nlab post are far from clear in this sense. I have a presheaf and a Law-Tier so I'm trying to find the more 'computable' sheafification. :)
– Nicolas Medina Sanchez
Aug 3 at 23:13















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