Pith Number

pith:AKXJDPCL

pith:2012:AKXJDPCLCYFHEAJQGK5YI5VVYK

not attested not anchored not stored refs pending

Bad Wadge-like reducibilities on the Baire space

Luca Motto Ros

arxiv:1212.3005 v2 · 2012-12-12 · 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{AKXJDPCLCYFHEAJQGK5YI5VVYK}

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	2026-05-18T03:13:34.097561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

02ae91bc4b160a72013032bb8476b5c2b6eb9d2eccb50b0058b75cf624a82b26

Aliases

arxiv: 1212.3005 · arxiv_version: 1212.3005v2 · doi: 10.48550/arxiv.1212.3005 · pith_short_12: AKXJDPCLCYFH · pith_short_16: AKXJDPCLCYFHEAJQ · pith_short_8: AKXJDPCL

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/AKXJDPCLCYFHEAJQGK5YI5VVYK \
  | 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: 02ae91bc4b160a72013032bb8476b5c2b6eb9d2eccb50b0058b75cf624a82b26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e224c68ace9a8054f5298d6ea8b73b298a3fdf3c846939c7f3c7f29acdeb2a0e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-12-12T22:34:00Z",
    "title_canon_sha256": "3f4a70efae60ec1f8d81bc401b3d0fdffce434db13390d0623041a23d919a75f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3005",
    "kind": "arxiv",
    "version": 2
  }
}