Pith Number

pith:Q4ZQCLXB

pith:2018:Q4ZQCLXBECIIDWR2MUFU24AMYL

not attested not anchored not stored refs pending

Analytic digraphs of uncountable Borel chromatic number under injective definable homomorphism

Dominique Lecomte (IMJ), Miroslav Zeleny

arxiv:1811.04738 v1 · 2018-11-12 · 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{Q4ZQCLXBECIIDWR2MUFU24AMYL}

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	2026-05-18T00:01:04.203946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8733012ee1209081da3a650b4d700cc2f4dabd8bd0f9d0cbd5c06b4c937cb9fd

Aliases

arxiv: 1811.04738 · arxiv_version: 1811.04738v1 · doi: 10.48550/arxiv.1811.04738 · pith_short_12: Q4ZQCLXBECII · pith_short_16: Q4ZQCLXBECIIDWR2 · pith_short_8: Q4ZQCLXB

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/Q4ZQCLXBECIIDWR2MUFU24AMYL \
  | 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: 8733012ee1209081da3a650b4d700cc2f4dabd8bd0f9d0cbd5c06b4c937cb9fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "818f752493d0498f813d88b3fef49c41ab21e524b29020c5427cad0b2a4a068b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-11-12T14:14:07Z",
    "title_canon_sha256": "3bb4a4bc02b70a430bfb403186fa23a6a609df8384ec6fdf083d1d317738e7d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.04738",
    "kind": "arxiv",
    "version": 1
  }
}