Pith Number

pith:ESKPEHXP

pith:2014:ESKPEHXPGFLFX6IIP54Z73BJRC

not attested not anchored not stored refs pending

Sector Models - A Toolkit for Teaching General Relativity. Part 1: Curved Spaces and Spacetimes

C. Zahn, U. Kraus

arxiv:1405.0323 v2 · 2014-05-01 · physics.ed-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ESKPEHXPGFLFX6IIP54Z73BJRC}

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	2026-05-18T01:43:20.774668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2494f21eef31565bf9087f799fec29889ac4714fad76e2481f833ac2244139b0

Aliases

arxiv: 1405.0323 · arxiv_version: 1405.0323v2 · doi: 10.48550/arxiv.1405.0323 · pith_short_12: ESKPEHXPGFLF · pith_short_16: ESKPEHXPGFLFX6II · pith_short_8: ESKPEHXP

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/ESKPEHXPGFLFX6IIP54Z73BJRC \
  | 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: 2494f21eef31565bf9087f799fec29889ac4714fad76e2481f833ac2244139b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecc0cd076d602f29b2cffaae0fc386a3db92948406282ac24ecf818381ddb15d",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2014-05-01T23:43:31Z",
    "title_canon_sha256": "589de31587fbc7cb7048ae54b034a71e0fb200182324a7abb9f120fb687accd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.0323",
    "kind": "arxiv",
    "version": 2
  }
}