Pith Number

pith:MYA54AS2

pith:2022:MYA54AS2Y4FFHE3E4TCTXQWUZU

not attested not anchored not stored refs pending

Higher amalgamation properties in measured structures

David M. Evans

arxiv:2202.10183 v2 · 2022-02-21 · 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{MYA54AS2Y4FFHE3E4TCTXQWUZU}

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	2026-07-05T07:10:17.132476Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6601de025ac70a539364e4c53bc2d4cd18c760bf0a3124bab5eee16a9d4f4e55

Aliases

arxiv: 2202.10183 · arxiv_version: 2202.10183v2 · doi: 10.48550/arxiv.2202.10183 · pith_short_12: MYA54AS2Y4FF · pith_short_16: MYA54AS2Y4FFHE3E · pith_short_8: MYA54AS2

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/MYA54AS2Y4FFHE3E4TCTXQWUZU \
  | 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: 6601de025ac70a539364e4c53bc2d4cd18c760bf0a3124bab5eee16a9d4f4e55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1607d0eac0d9309cb517955fbb4a3329d65d92fca1ae30c97cc876bb5c02372",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2022-02-21T12:50:46Z",
    "title_canon_sha256": "c2b6824c7474c12eb0475285a60837cbae953aae811001b4994a3dc5eda2e6aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.10183",
    "kind": "arxiv",
    "version": 2
  }
}