Pith Number

pith:YSRP7KDO

pith:2013:YSRP7KDOB5JTJOG5FX57FWNBAW

not attested not anchored not stored refs pending

Coverings by few monochromatic pieces - a transition between two Ramsey problems

Andr\'as Gy\'arf\'as, G\'abor N. S\'ark\"ozy, Stanley Selkow

arxiv:1304.0871 v1 · 2013-04-03 · 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{YSRP7KDOB5JTJOG5FX57FWNBAW}

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	2026-05-18T03:29:05.893720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4a2ffa86e0f5334b8dd2dfbf2d9a105988964fb4a12479e7dafeb6f1ece90e3

Aliases

arxiv: 1304.0871 · arxiv_version: 1304.0871v1 · doi: 10.48550/arxiv.1304.0871 · pith_short_12: YSRP7KDOB5JT · pith_short_16: YSRP7KDOB5JTJOG5 · pith_short_8: YSRP7KDO

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/YSRP7KDOB5JTJOG5FX57FWNBAW \
  | 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: c4a2ffa86e0f5334b8dd2dfbf2d9a105988964fb4a12479e7dafeb6f1ece90e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d92a0fa644a3e589e8b47a4b1174dc1a4511e854bdaa144c40efa2f068e8cd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-04-03T08:47:37Z",
    "title_canon_sha256": "7f1426ace6315958e2611ac367a486e84d5e23fd6834db7a398e5a3151114767"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.0871",
    "kind": "arxiv",
    "version": 1
  }
}