Pith Number

pith:3JENJCWA

pith:2018:3JENJCWAJMKIJ5U52OHUDD5OW5

not attested not anchored not stored refs pending

A Generalization of the {\L}o\'s-Tarski Preservation Theorem - Dissertation Summary

Abhisekh Sankaran

arxiv:1811.01014 v1 · 2018-11-02 · cs.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{3JENJCWAJMKIJ5U52OHUDD5OW5}

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	2026-05-18T00:01:39.655656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da48d48ac04b1484f69dd38f418faeb765abbf19c4afd83540cc0d6687d46024

Aliases

arxiv: 1811.01014 · arxiv_version: 1811.01014v1 · doi: 10.48550/arxiv.1811.01014 · pith_short_12: 3JENJCWAJMKI · pith_short_16: 3JENJCWAJMKIJ5U5 · pith_short_8: 3JENJCWA

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/3JENJCWAJMKIJ5U52OHUDD5OW5 \
  | 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: da48d48ac04b1484f69dd38f418faeb765abbf19c4afd83540cc0d6687d46024

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12f237d5053eaf921979a63f6cfa3f28aecc760a461115bd3e9a0fa0d88f1102",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-11-02T17:58:14Z",
    "title_canon_sha256": "5ad3165fb65d6907e7c1f64e9811351fbfbecaff04546088c08ee2fee0d776b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.01014",
    "kind": "arxiv",
    "version": 1
  }
}