Pith Number

pith:RAH2PGDK

pith:2017:RAH2PGDKN6EDWX7ZPFD32YPXVB

not attested not anchored not stored refs pending

Topological complexity of unordered configuration spaces of surfaces

Andrea Bianchi, David Recio-Mitter

arxiv:1712.07068 v3 · 2017-12-19 · 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{RAH2PGDKN6EDWX7ZPFD32YPXVB}

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	2026-05-17T23:44:59.919400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

880fa7986a6f883b5ff97947bd61f7a87b132842a6f6e88c2395beacbf83f971

Aliases

arxiv: 1712.07068 · arxiv_version: 1712.07068v3 · doi: 10.48550/arxiv.1712.07068 · pith_short_12: RAH2PGDKN6ED · pith_short_16: RAH2PGDKN6EDWX7Z · pith_short_8: RAH2PGDK

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/RAH2PGDKN6EDWX7ZPFD32YPXVB \
  | 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: 880fa7986a6f883b5ff97947bd61f7a87b132842a6f6e88c2395beacbf83f971

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f0ca092c4c571702d6177554ea3356b34f3182563430b5f4c576d3d4b7e81c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-12-19T17:31:47Z",
    "title_canon_sha256": "a590a6d93d18799fb5d15d05b337417310fc2635c3de6bddeb36a6c90a29526c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07068",
    "kind": "arxiv",
    "version": 3
  }
}