Pith Number

pith:4ZIRJQ3G

pith:2024:4ZIRJQ3GAZQUBZR3QLKDNOU2XR

not attested not anchored not stored refs pending

The strong CP problem revisited and solved by the gauge group topology

F. Strocchi

arxiv:2404.19400 v3 · 2024-04-30 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ZIRJQ3GAZQUBZR3QLKDNOU2XR}

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.

Cited by

2 papers in Pith

A particle on a ring or: how I learned to stop worrying and love $\theta$-vacua

Topological Susceptibility and QCD at Finite Theta Angle

Receipt and verification

First computed	2026-07-05T09:27:53.802218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e65114c366066140e63b82d436ba9abc7adffd4643e5d569c3793a7bb4d1ec48

Aliases

arxiv: 2404.19400 · arxiv_version: 2404.19400v3 · doi: 10.48550/arxiv.2404.19400 · pith_short_12: 4ZIRJQ3GAZQU · pith_short_16: 4ZIRJQ3GAZQUBZR3 · pith_short_8: 4ZIRJQ3G

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/4ZIRJQ3GAZQUBZR3QLKDNOU2XR \
  | 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: e65114c366066140e63b82d436ba9abc7adffd4643e5d569c3793a7bb4d1ec48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe4995c1814938b076559929b96d14306424cf9b999e1200ce9bf6378563dbb1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2024-04-30T09:47:35Z",
    "title_canon_sha256": "1e51e0ca00587f8829ceb7485fe5b795122c3e277cf42c009571c16c0ab00d4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2404.19400",
    "kind": "arxiv",
    "version": 3
  }
}