Pith Number

pith:TF5FPXFK

pith:2018:TF5FPXFKIHXRHJLF3NT5X53YVP

not attested not anchored not stored refs pending

There is a $+$-Ramsey \textsf{MAD} family

Osvaldo Guzman

arxiv:1810.08763 v1 · 2018-10-20 · 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{TF5FPXFKIHXRHJLF3NT5X53YVP}

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	2026-05-18T00:02:41.972966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

997a57dcaa41ef13a565db67dbf778abcf74140ef4eb5af39ebf48b88d6bac90

Aliases

arxiv: 1810.08763 · arxiv_version: 1810.08763v1 · doi: 10.48550/arxiv.1810.08763 · pith_short_12: TF5FPXFKIHXR · pith_short_16: TF5FPXFKIHXRHJLF · pith_short_8: TF5FPXFK

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/TF5FPXFKIHXRHJLF3NT5X53YVP \
  | 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: 997a57dcaa41ef13a565db67dbf778abcf74140ef4eb5af39ebf48b88d6bac90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9ef234e704f17ff818f273473470369b3f7758bba7aa3409c461eeafff35261",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-10-20T07:18:28Z",
    "title_canon_sha256": "28c5b04309e6e8ce6bce0b82d26c844bbce9ea98361f7c26461bf69fbfc480be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08763",
    "kind": "arxiv",
    "version": 1
  }
}