Pith Number

pith:BV34MDG4

pith:2020:BV34MDG4GFHUTYEPOB35B2URAS

not attested not anchored not stored refs pending

Simplicial model structures on pro-categories

Ieke Moerdijk, Thomas Blom

arxiv:2009.07539 v2 · 2020-09-16 · 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{BV34MDG4GFHUTYEPOB35B2URAS}

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	2026-07-05T07:12:31.623722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d77c60cdc314f49e08f7077d0ea910498f6d2c682778799aa02ed1056821258

Aliases

arxiv: 2009.07539 · arxiv_version: 2009.07539v2 · doi: 10.48550/arxiv.2009.07539 · pith_short_12: BV34MDG4GFHU · pith_short_16: BV34MDG4GFHUTYEP · pith_short_8: BV34MDG4

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/BV34MDG4GFHUTYEPOB35B2URAS \
  | 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: 0d77c60cdc314f49e08f7077d0ea910498f6d2c682778799aa02ed1056821258

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6d55a0af00c85f3b83d8ed322cb257aae99f2a200e6b4814e1a6d09945bb9a8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2020-09-16T08:24:46Z",
    "title_canon_sha256": "2f6b7deb6faa8df96e091f7edddecb167aec69db5ca2d00cd10635235d53fa56"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.07539",
    "kind": "arxiv",
    "version": 2
  }
}