Pith Number

pith:LS7FF6U3

pith:2009:LS7FF6U34KMFOERYTPF5L55BAD

not attested not anchored not stored refs pending

Studying Three Phase Supply in School

Amit Kumar Singhal, P.Arun

arxiv:0907.3279 v1 · 2009-07-19 · 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{LS7FF6U34KMFOERYTPF5L55BAD}

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	2026-05-18T02:12:55.763140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5cbe52fa9be2985712389bcbd5f7a100fa200910c8b0f50e6096021beab5ea3b

Aliases

arxiv: 0907.3279 · arxiv_version: 0907.3279v1 · doi: 10.48550/arxiv.0907.3279 · pith_short_12: LS7FF6U34KMF · pith_short_16: LS7FF6U34KMFOERY · pith_short_8: LS7FF6U3

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/LS7FF6U34KMFOERYTPF5L55BAD \
  | 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: 5cbe52fa9be2985712389bcbd5f7a100fa200910c8b0f50e6096021beab5ea3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba0298be9f9b3d37d32846253980caf74c3988354df548b642e2262e413110ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2009-07-19T10:27:49Z",
    "title_canon_sha256": "069e83b252069ea9627e95acefd275a6517e188fc101d42c3246f0b609536fcf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3279",
    "kind": "arxiv",
    "version": 1
  }
}