Pith Number

pith:EWIQFTZI

pith:2016:EWIQFTZIMUX4ATPAO2MX5CJGQH

not attested not anchored not stored refs pending

Computability and Categoricity of Weakly Ultrahomogeneous Structures

Douglas Cenzer, Francis Adams

arxiv:1608.01254 v1 · 2016-08-03 · 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{EWIQFTZIMUX4ATPAO2MX5CJGQH}

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	2026-05-18T01:09:56.063748Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

259102cf28652fc04de076997e892681f01b74ae0389ceea55a6fe19e98c0282

Aliases

arxiv: 1608.01254 · arxiv_version: 1608.01254v1 · doi: 10.48550/arxiv.1608.01254 · pith_short_12: EWIQFTZIMUX4 · pith_short_16: EWIQFTZIMUX4ATPA · pith_short_8: EWIQFTZI

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/EWIQFTZIMUX4ATPAO2MX5CJGQH \
  | 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: 259102cf28652fc04de076997e892681f01b74ae0389ceea55a6fe19e98c0282

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8bae196cbc714dd5b969b5e52e57271918b2caf6fc58e7ca9fcb5efc125f0b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2016-08-03T16:50:42Z",
    "title_canon_sha256": "3e9a9758471a41cff41f5904cf86a22c1a5ce1c943da53d7bceea4a4c80a3bb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.01254",
    "kind": "arxiv",
    "version": 1
  }
}