Pith Number

pith:7MF6UQNV

pith:2009:7MF6UQNVHOWMFOZJDTROXOKUK2

not attested not anchored not stored refs pending

On Galvin's lemma and Ramsey spaces

Jose G. Mijares

arxiv:0911.3833 v2 · 2009-11-19 · math.CO · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7MF6UQNVHOWMFOZJDTROXOKUK2}

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	2026-05-18T02:39:55.906963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb0bea41b53bacc2bb291ce2ebb954568f0926604cb533b6c9948e470c7ba6d6

Aliases

arxiv: 0911.3833 · arxiv_version: 0911.3833v2 · doi: 10.48550/arxiv.0911.3833 · pith_short_12: 7MF6UQNVHOWM · pith_short_16: 7MF6UQNVHOWMFOZJ · pith_short_8: 7MF6UQNV

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/7MF6UQNVHOWMFOZJDTROXOKUK2 \
  | 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: fb0bea41b53bacc2bb291ce2ebb954568f0926604cb533b6c9948e470c7ba6d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ff7cd01de52387590b4df80b7bcaf7a589fca79fded91af764e0ddc5e65af2d",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-11-19T16:23:16Z",
    "title_canon_sha256": "b17abe330a8a47d2703078f66ce0aa00851b6384ec956412fc2c6bb42962366a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3833",
    "kind": "arxiv",
    "version": 2
  }
}