Pith Number

pith:UTFQTBSG

pith:2012:UTFQTBSGXYWEVBUDJRYQYZQ2DU

not attested not anchored not stored refs pending

Two player game variant of the Erdos-Szekeres problem

Parikshit Kolipaka, Sathish Govindarajan

arxiv:1207.6778 v1 · 2012-07-29 · cs.CG · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UTFQTBSGXYWEVBUDJRYQYZQ2DU}

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	2026-05-18T03:49:48.744495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4cb098646be2c4a86834c710c661a1d2afccbe6ac93fd1f7f516b92579c7b72

Aliases

arxiv: 1207.6778 · arxiv_version: 1207.6778v1 · doi: 10.48550/arxiv.1207.6778 · pith_short_12: UTFQTBSGXYWE · pith_short_16: UTFQTBSGXYWEVBUD · pith_short_8: UTFQTBSG

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/UTFQTBSGXYWEVBUDJRYQYZQ2DU \
  | 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: a4cb098646be2c4a86834c710c661a1d2afccbe6ac93fd1f7f516b92579c7b72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7fcfdd7cbee006ff89d7f9e9cecc4490c69fd93f2c6f875c253bd460a630358",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-07-29T14:06:26Z",
    "title_canon_sha256": "82b405762d54b5fc2bffceefa2a8e3d3abed92de4f3cb092c97b0a3ab368da63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6778",
    "kind": "arxiv",
    "version": 1
  }
}