Pith Number

pith:XH2L436K

pith:2014:XH2L436KPL5QICQAVXBJBV5V5Y

not attested not anchored not stored refs pending

On the Richter-Thomassen Conjecture about Pairwise Intersecting Closed Curves

G\'abor Tardos, J\'anos Pach, Natan Rubin

arxiv:1412.6676 v1 · 2014-12-20 · math.CO · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XH2L436KPL5QICQAVXBJBV5V5Y}

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	2026-05-18T02:30:46.455731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9f4be6fca7afb040a00adc290d7b5ee1bd2e028ac0ac76a5a89d3009963a4fe

Aliases

arxiv: 1412.6676 · arxiv_version: 1412.6676v1 · doi: 10.48550/arxiv.1412.6676 · pith_short_12: XH2L436KPL5Q · pith_short_16: XH2L436KPL5QICQA · pith_short_8: XH2L436K

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/XH2L436KPL5QICQAVXBJBV5V5Y \
  | 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: b9f4be6fca7afb040a00adc290d7b5ee1bd2e028ac0ac76a5a89d3009963a4fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec74ae8e7a7d05b1c4a2772e0dfafd2da01d822ad068a10a27f9c9336881a620",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-12-20T18:28:02Z",
    "title_canon_sha256": "3fd106a9fff9af6aac56d83a0cef31d9f82a2d27a3ec2cdb506532b822a4e0cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.6676",
    "kind": "arxiv",
    "version": 1
  }
}