Pith Number

pith:7Q3ATKMT

pith:2015:7Q3ATKMT3NA3PV5TCSOE5ATZLI

not attested not anchored not stored refs pending

Taub-NUT as Bertrand spacetime with magnetic fields

Partha Guha, Raju Roychowdhury, Sumanto Chanda

arxiv:1503.08183 v4 · 2015-03-27 · hep-th · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7Q3ATKMT3NA3PV5TCSOE5ATZLI}

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	2026-05-18T01:04:41.755812Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc3609a993db41b7d7b3149c4e82795a2cb6d96df1f1b38c6a19048621efff38

Aliases

arxiv: 1503.08183 · arxiv_version: 1503.08183v4 · doi: 10.48550/arxiv.1503.08183 · pith_short_12: 7Q3ATKMT3NA3 · pith_short_16: 7Q3ATKMT3NA3PV5T · pith_short_8: 7Q3ATKMT

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/7Q3ATKMT3NA3PV5TCSOE5ATZLI \
  | 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: fc3609a993db41b7d7b3149c4e82795a2cb6d96df1f1b38c6a19048621efff38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f043c00922bc872852746dfcc1a622e04d5d14672d746e20fd6b5b44e46d99c4",
    "cross_cats_sorted": [
      "gr-qc",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2015-03-27T18:52:16Z",
    "title_canon_sha256": "f1774ecfae16f2ef4bb841104c335e97fb2df4beafcbdd87b7d53f9d10a7ceaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.08183",
    "kind": "arxiv",
    "version": 4
  }
}