Pith Number

pith:35U35Q5F

pith:2018:35U35Q5F2HIBVL3KOBR6Q7UQHR

not attested not anchored not stored refs pending

Flabby and injective objects in toposes

Ingo Blechschmidt

arxiv:1810.12708 v1 · 2018-10-30 · math.CT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{35U35Q5F2HIBVL3KOBR6Q7UQHR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Coexact completion of profinite Heyting algebras and uniform interpolation

Receipt and verification

First computed	2026-05-18T00:01:54.358957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df69bec3a5d1d01aaf6a7063e87e903c4967191b86a87321147d9eb8db0d2bb6

Aliases

arxiv: 1810.12708 · arxiv_version: 1810.12708v1 · doi: 10.48550/arxiv.1810.12708 · pith_short_12: 35U35Q5F2HIB · pith_short_16: 35U35Q5F2HIBVL3K · pith_short_8: 35U35Q5F

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/35U35Q5F2HIBVL3KOBR6Q7UQHR \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: df69bec3a5d1d01aaf6a7063e87e903c4967191b86a87321147d9eb8db0d2bb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39a46473f00af4308a46142069fa4c1b5de0bea4f530b009b088a5afcc223d7c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2018-10-30T12:47:24Z",
    "title_canon_sha256": "f110a3e407d5f07743a6d939a95c71e0e9f51c178c4ab9d677f50c090128d663"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.12708",
    "kind": "arxiv",
    "version": 1
  }
}