Pith Number

pith:QSR3AENB

pith:2013:QSR3AENBGIIHXO4HDCCCQGRU6E

not attested not anchored not stored refs pending

Filtered Colimit Preserving Functors on Models of a Regular Theory

Henrik Forssell

arxiv:1306.6789 v1 · 2013-06-28 · 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{QSR3AENBGIIHXO4HDCCCQGRU6E}

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.

Receipt and verification

First computed	2026-05-18T03:19:42.975864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84a3b011a132107bbb871884281a34f115b0f1d29589fa3fdd04a0d26dd2cac5

Aliases

arxiv: 1306.6789 · arxiv_version: 1306.6789v1 · doi: 10.48550/arxiv.1306.6789 · pith_short_12: QSR3AENBGIIH · pith_short_16: QSR3AENBGIIHXO4H · pith_short_8: QSR3AENB

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/QSR3AENBGIIHXO4HDCCCQGRU6E \
  | 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: 84a3b011a132107bbb871884281a34f115b0f1d29589fa3fdd04a0d26dd2cac5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "034363be9032dc0c8886077ad114ca8bc545cfb2e05289ea858eea1bc83e85cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2013-06-28T11:04:23Z",
    "title_canon_sha256": "2dd4b7b7dfdad0313e326bcb78a2d8d6ca8db1c5cfc21c8e17612dd7208df144"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.6789",
    "kind": "arxiv",
    "version": 1
  }
}