Pith Number

pith:OVK5GQGF

pith:2014:OVK5GQGFGPWVV55EFMJA2DTIYQ

not attested not anchored not stored refs pending

Why are differential equations used for expressing the laws of physics?

Shabnam Siddiqui

arxiv:1406.1112 v1 · 2014-06-04 · physics.ed-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{OVK5GQGFGPWVV55EFMJA2DTIYQ}

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	2026-05-18T02:50:30.308813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7555d340c533ed5af7a42b120d0e68c43dc7a003670bed6fe31f5a3b9ed5de26

Aliases

arxiv: 1406.1112 · arxiv_version: 1406.1112v1 · doi: 10.48550/arxiv.1406.1112 · pith_short_12: OVK5GQGFGPWV · pith_short_16: OVK5GQGFGPWVV55E · pith_short_8: OVK5GQGF

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/OVK5GQGFGPWVV55EFMJA2DTIYQ \
  | 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: 7555d340c533ed5af7a42b120d0e68c43dc7a003670bed6fe31f5a3b9ed5de26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e52f3540de1a9fbaec08728b848da36eb3c323442efbd1e35708b21f215d5ab6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2014-06-04T17:00:31Z",
    "title_canon_sha256": "1a1b64c35a6975c1f8b67c86440494f8f5631e50674c419d752bc70766572d8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1112",
    "kind": "arxiv",
    "version": 1
  }
}