Pith Number

pith:N5TPVNL6

pith:2018:N5TPVNL6BFAW5BKUMMW3APQDCD

not attested not anchored not stored refs pending

Some Ulam's reconstruction problems for quantum states

Felix Huber, Simone Severini

arxiv:1802.00783 v2 · 2018-02-02 · quant-ph · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N5TPVNL6BFAW5BKUMMW3APQDCD}

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	2026-05-18T00:05:23.829478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f66fab57e09416e8554632db03e0310e982a9579d97c5527889157c40c1a4f7

Aliases

arxiv: 1802.00783 · arxiv_version: 1802.00783v2 · doi: 10.48550/arxiv.1802.00783 · pith_short_12: N5TPVNL6BFAW · pith_short_16: N5TPVNL6BFAW5BKU · pith_short_8: N5TPVNL6

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/N5TPVNL6BFAW5BKUMMW3APQDCD \
  | 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: 6f66fab57e09416e8554632db03e0310e982a9579d97c5527889157c40c1a4f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "783ce47ec73ca0bd842ac0cd68ace5ee6ec8f14a7dd861aec04e45ddd1bc7232",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-02-02T17:34:43Z",
    "title_canon_sha256": "22cf276dd08ac6368e07b81810358ba7ebc5990eba3213e025bc46cbaacffd59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00783",
    "kind": "arxiv",
    "version": 2
  }
}