Pith Number

pith:T3QK2PE7

pith:2016:T3QK2PE7VSKGICMGMCXZ5LIWYR

not attested not anchored not stored refs pending

Segal objects and the Grothendieck construction

Pedro Boavida de Brito

arxiv:1605.00706 v2 · 2016-05-02 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T3QK2PE7VSKGICMGMCXZ5LIWYR}

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	2026-05-18T00:29:41.063609Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ee0ad3c9fac9464098660af9ead16c450ae295cc0bb4239ba6c3215c54a9632

Aliases

arxiv: 1605.00706 · arxiv_version: 1605.00706v2 · doi: 10.48550/arxiv.1605.00706 · pith_short_12: T3QK2PE7VSKG · pith_short_16: T3QK2PE7VSKGICMG · pith_short_8: T3QK2PE7

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/T3QK2PE7VSKGICMGMCXZ5LIWYR \
  | 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: 9ee0ad3c9fac9464098660af9ead16c450ae295cc0bb4239ba6c3215c54a9632

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1095a4784b41285a124fbcf87dd111af0ef793d7ac150a688e42a3f077cd1cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2016-05-02T23:31:16Z",
    "title_canon_sha256": "eb3edf261588a368381a34f67413350dbcdd3054476a235b26f64c413507b5dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.00706",
    "kind": "arxiv",
    "version": 2
  }
}