Pith Number

pith:NAHNSQSA

pith:2008:NAHNSQSACAAOVHCMPZZPXA2UCR

not attested not anchored not stored refs pending

Undetermined states: how to find them and their applications

Li-Yi Hsu, Min-Hsiu Hsieh, Wen-Tai Yen

arxiv:0809.3081 v2 · 2008-09-18 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NAHNSQSACAAOVHCMPZZPXA2UCR}

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	2026-05-18T04:32:22.253562Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

680ed942401000ea9c4c7e72fb83541476f451b5a449fd09de80e99ff2924f1e

Aliases

arxiv: 0809.3081 · arxiv_version: 0809.3081v2 · doi: 10.48550/arxiv.0809.3081 · pith_short_12: NAHNSQSACAAO · pith_short_16: NAHNSQSACAAOVHCM · pith_short_8: NAHNSQSA

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/NAHNSQSACAAOVHCMPZZPXA2UCR \
  | 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: 680ed942401000ea9c4c7e72fb83541476f451b5a449fd09de80e99ff2924f1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dde3e7ec89082550bf501bfe7c704d456963b136a06a7c6cf15c25a6174c35e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-09-18T07:15:04Z",
    "title_canon_sha256": "f0204c2d9f2dc1fca1d78929b9cd923780e218a34e6c02e1f2be0cc332cdedfe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3081",
    "kind": "arxiv",
    "version": 2
  }
}