Pith Number

pith:IYMYLWQE

pith:2011:IYMYLWQEOWXMIDXVSOOMDCCSWL

not attested not anchored not stored refs pending

On Oka's Extra-Zero Problem

Junjiro Noguchi, Makoto Abe, Sachiko Hamano

arxiv:1108.2076 v1 · 2011-08-10 · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IYMYLWQEOWXMIDXVSOOMDCCSWL}

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	2026-05-18T04:15:49.427917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

461985da0475aec40ef5939cc18852b2de324c3f25b25c02c30cb62efb776994

Aliases

arxiv: 1108.2076 · arxiv_version: 1108.2076v1 · doi: 10.48550/arxiv.1108.2076 · pith_short_12: IYMYLWQEOWXM · pith_short_16: IYMYLWQEOWXMIDXV · pith_short_8: IYMYLWQE

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/IYMYLWQEOWXMIDXVSOOMDCCSWL \
  | 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: 461985da0475aec40ef5939cc18852b2de324c3f25b25c02c30cb62efb776994

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e76d53388cf6d3c47e1c6084e584f8c97cbe910c29cc77ec6ab31ce4f75395a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2011-08-10T01:16:29Z",
    "title_canon_sha256": "e6491b63c923b6b6215f06f79036e093da9c4d9ab841888ecdf68da01ece5516"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2076",
    "kind": "arxiv",
    "version": 1
  }
}