Pith Number

pith:G3RSXCA7

pith:2017:G3RSXCA7SEMM4MPC2IMCGHMH5K

not attested not anchored not stored refs pending

Optimal quantum observables

Erkka Haapasalo, Juha-Pekka Pellonpaa

arxiv:1705.03636 v1 · 2017-05-10 · 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{G3RSXCA7SEMM4MPC2IMCGHMH5K}

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	2026-05-18T00:04:40.055230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

36e32b881f9118ce31e2d218231d87ea8afe58d4297122a0e87c903afafe2549

Aliases

arxiv: 1705.03636 · arxiv_version: 1705.03636v1 · doi: 10.48550/arxiv.1705.03636 · pith_short_12: G3RSXCA7SEMM · pith_short_16: G3RSXCA7SEMM4MPC · pith_short_8: G3RSXCA7

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/G3RSXCA7SEMM4MPC2IMCGHMH5K \
  | 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: 36e32b881f9118ce31e2d218231d87ea8afe58d4297122a0e87c903afafe2549

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fd902d45a9011b7cedc77e5cdc7a2be80ac1024b53a27f1796ca7213df67b69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-05-10T07:31:43Z",
    "title_canon_sha256": "b7788abef163a0ac2d4a45d88caa10ac37196a46102a23dab254990356b46de7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.03636",
    "kind": "arxiv",
    "version": 1
  }
}