Pith Number

pith:SUDNN6FW

pith:2010:SUDNN6FWAUYQWOUZE7BFDK4NLT

not attested not anchored not stored refs pending

Full and convex linear subcategories are incompressible

Andrea Solotar, Claude Cibils, Maria Julia Redondo

arxiv:1004.5553 v2 · 2010-04-30 · math.RA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SUDNN6FWAUYQWOUZE7BFDK4NLT}

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	2026-05-18T00:13:48.821125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9506d6f8b605310b3a9927c251ab8d5cec751133f907c1ce406bfd03cd4ee5dd

Aliases

arxiv: 1004.5553 · arxiv_version: 1004.5553v2 · doi: 10.48550/arxiv.1004.5553 · pith_short_12: SUDNN6FWAUYQ · pith_short_16: SUDNN6FWAUYQWOUZ · pith_short_8: SUDNN6FW

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/SUDNN6FWAUYQWOUZE7BFDK4NLT \
  | 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: 9506d6f8b605310b3a9927c251ab8d5cec751133f907c1ce406bfd03cd4ee5dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f51dc183075ea3bf24edb9bcf69702b79b4cae3909418179d429a274a3923768",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2010-04-30T15:15:58Z",
    "title_canon_sha256": "ed096045b94ba4e513b32b46bec494c39ec83f3855ffb7937cb509264eb70269"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.5553",
    "kind": "arxiv",
    "version": 2
  }
}