Pith Number

pith:NXZEGDFK

pith:2011:NXZEGDFKUQ2BA2V2WQQP2FVWQ2

not attested not anchored not stored refs pending

Intersection patterns of convex sets via simplicial complexes, a survey

Martin Tancer

arxiv:1102.0417 v2 · 2011-02-02 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NXZEGDFKUQ2BA2V2WQQP2FVWQ2}

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	2026-05-18T04:10:34.408228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6df2430caaa434106abab420fd16b68690486f66fe6dc78a98fc95cb1f8f8e25

Aliases

arxiv: 1102.0417 · arxiv_version: 1102.0417v2 · doi: 10.48550/arxiv.1102.0417 · pith_short_12: NXZEGDFKUQ2B · pith_short_16: NXZEGDFKUQ2BA2V2 · pith_short_8: NXZEGDFK

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/NXZEGDFKUQ2BA2V2WQQP2FVWQ2 \
  | 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: 6df2430caaa434106abab420fd16b68690486f66fe6dc78a98fc95cb1f8f8e25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bf9953db98651dfbe18a64d9dad60631cc1335c85e63813a40c32b40a2a3202",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-02-02T12:44:52Z",
    "title_canon_sha256": "7d1d53dcf168297442a6534f343c70e2094809c7a9ad4e1bea20ada48c71f652"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0417",
    "kind": "arxiv",
    "version": 2
  }
}