Pith Number

pith:G6T5F4ZB

pith:2012:G6T5F4ZB7EGRJWAZUKC42TXSUD

not attested not anchored not stored refs pending

Automorphism Groups of Countably Categorical Linear Orders are Extremely Amenable

Daniel McDonald, Fran\c{c}ois G. Dorais, Manuel Rivera, Steven Gubkin

arxiv:1202.4092 v1 · 2012-02-18 · 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{G6T5F4ZB7EGRJWAZUKC42TXSUD}

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	2026-05-18T02:59:06.596681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37a7d2f321f90d14d819a285cd4ef2a0d17469672367eb426f389b8b8dc1e8f6

Aliases

arxiv: 1202.4092 · arxiv_version: 1202.4092v1 · doi: 10.48550/arxiv.1202.4092 · pith_short_12: G6T5F4ZB7EGR · pith_short_16: G6T5F4ZB7EGRJWAZ · pith_short_8: G6T5F4ZB

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/G6T5F4ZB7EGRJWAZUKC42TXSUD \
  | 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: 37a7d2f321f90d14d819a285cd4ef2a0d17469672367eb426f389b8b8dc1e8f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83570b4dd4a3034ae0c72e8db93d107016b6196f21c795475d641cc88bebb246",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-02-18T18:31:24Z",
    "title_canon_sha256": "7449d217431525cb19c471a95b7a4cdbd107ddeb24698ca427a7248cce45df77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4092",
    "kind": "arxiv",
    "version": 1
  }
}