pith. sign in
Pith Number

pith:6XY5A4F4

pith:2011:6XY5A4F4XBDBDQ4QQJYXHP2D32
not attested not anchored not stored refs pending

Some helicities in electromagnetic and gravitational fields

Zi-Hua Weng

arxiv:1101.2941 v1 · 2011-01-15 · physics.gen-ph

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{6XY5A4F4XBDBDQ4QQJYXHP2D32}

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 2026-05-18T04:31:30.701108Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

f5f1d070bcb84611c390827173bf43de8a1d1c0343be5bccd8b45b38b7290e36

Aliases

arxiv: 1101.2941 · arxiv_version: 1101.2941v1 · doi: 10.48550/arxiv.1101.2941 · pith_short_12: 6XY5A4F4XBDB · pith_short_16: 6XY5A4F4XBDBDQ4Q · pith_short_8: 6XY5A4F4
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/6XY5A4F4XBDBDQ4QQJYXHP2D32 \
  | 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: f5f1d070bcb84611c390827173bf43de8a1d1c0343be5bccd8b45b38b7290e36
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "decad5b51adee879740d7021faad62ff72e3e5e9cf64137094ed659648468458",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2011-01-15T04:29:26Z",
    "title_canon_sha256": "489fc1154e924a72866d23b38a18037a03c4e0692cbc36bdfc2a633a899a7f43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.2941",
    "kind": "arxiv",
    "version": 1
  }
}