Pith Number

pith:HFV64YXT

pith:2015:HFV64YXTEAZGURBKVMD47VIUGH

not attested not anchored not stored refs pending

Elementary derivation of the expressions of momentum and energy in special relativity

Luca Peliti

arxiv:1504.07287 v2 · 2015-04-27 · physics.class-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{HFV64YXTEAZGURBKVMD47VIUGH}

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	2026-05-18T01:21:13.390927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

396bee62f320326a442aab07cfd51431e2d5dc3ea8adb175311883110aa740eb

Aliases

arxiv: 1504.07287 · arxiv_version: 1504.07287v2 · doi: 10.48550/arxiv.1504.07287 · pith_short_12: HFV64YXTEAZG · pith_short_16: HFV64YXTEAZGURBK · pith_short_8: HFV64YXT

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/HFV64YXTEAZGURBKVMD47VIUGH \
  | 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: 396bee62f320326a442aab07cfd51431e2d5dc3ea8adb175311883110aa740eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c724a0c515881e69effb2f85454586de9a95d4070ae9339eebf1b21f9d869f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2015-04-27T22:07:36Z",
    "title_canon_sha256": "71ce4082be730419a75637c01c940696d7d5b60d327b69997593352b7189c985"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07287",
    "kind": "arxiv",
    "version": 2
  }
}