Pith Number

pith:BKSEIYVO

pith:2010:BKSEIYVO3OYFPQVIR6GUPICSRV

not attested not anchored not stored refs pending

Connectivity of complexes of separating curves

Eduard Looijenga

arxiv:1001.0823 v3 · 2010-01-06 · math.GT · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BKSEIYVO3OYFPQVIR6GUPICSRV}

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	2026-05-18T04:02:53.033750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0aa44462aedbb057c2a88f8d47a0528d558069523db42ff229b296ea42f8fb9b

Aliases

arxiv: 1001.0823 · arxiv_version: 1001.0823v3 · doi: 10.48550/arxiv.1001.0823 · pith_short_12: BKSEIYVO3OYF · pith_short_16: BKSEIYVO3OYFPQVI · pith_short_8: BKSEIYVO

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/BKSEIYVO3OYFPQVIR6GUPICSRV \
  | 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: 0aa44462aedbb057c2a88f8d47a0528d558069523db42ff229b296ea42f8fb9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94fa024d00377830ef51e00aa238afd4d975f45be95a79e0ec7da6509a85ca6a",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2010-01-06T06:51:30Z",
    "title_canon_sha256": "1d1978078df44a138fb8eb19652d2817481fa0cd52d4b45dba91e94f2128be90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.0823",
    "kind": "arxiv",
    "version": 3
  }
}