Pith Number

pith:G2N2ZYLB

pith:2007:G2N2ZYLBTBA45RGML4JN7BG2QB

not attested not anchored not stored refs pending

Interpreting Recoil For Undergraduate Students

Tarek A. Elsayed

arxiv:0710.2155 v3 · 2007-10-11 · physics.ed-ph · 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{G2N2ZYLBTBA45RGML4JN7BG2QB}

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	2026-05-18T03:03:33.237406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

369bace1619841cec4cc5f12df84da80662b72cedc4121d81a525c7e2f2fabeb

Aliases

arxiv: 0710.2155 · arxiv_version: 0710.2155v3 · doi: 10.48550/arxiv.0710.2155 · pith_short_12: G2N2ZYLBTBA4 · pith_short_16: G2N2ZYLBTBA45RGM · pith_short_8: G2N2ZYLB

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/G2N2ZYLBTBA45RGML4JN7BG2QB \
  | 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: 369bace1619841cec4cc5f12df84da80662b72cedc4121d81a525c7e2f2fabeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "200d91cb1dfce7336b2b48fd4046c4f0938031bedcbf3a82a98c85c7e35a7e47",
    "cross_cats_sorted": [
      "physics.class-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2007-10-11T03:06:54Z",
    "title_canon_sha256": "2e43ed2c80fec4a425da14d61736e0f2e3ea6e2fabf1cc280c87dbca92c3a6db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.2155",
    "kind": "arxiv",
    "version": 3
  }
}