Pith Number

pith:IOMSTYMH

pith:2013:IOMSTYMH4PLEJZVVLAJ47QXIBT

not attested not anchored not stored refs pending

The reflector problem and the inverse square law

Ahmad Sabra, Cristian E. Gutierrez

arxiv:1305.7024 v1 · 2013-05-30 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IOMSTYMH4PLEJZVVLAJ47QXIBT}

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	2026-05-18T03:22:16.570247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

439929e187e3d644e6b55813cfc2e80ccbb585fcd89c7580081adf7407324fae

Aliases

arxiv: 1305.7024 · arxiv_version: 1305.7024v1 · doi: 10.48550/arxiv.1305.7024 · pith_short_12: IOMSTYMH4PLE · pith_short_16: IOMSTYMH4PLEJZVV · pith_short_8: IOMSTYMH

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/IOMSTYMH4PLEJZVVLAJ47QXIBT \
  | 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: 439929e187e3d644e6b55813cfc2e80ccbb585fcd89c7580081adf7407324fae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82ce381189b2db3d10fd4394237b61fae3923bf0842cc88b8a876e01ecd45915",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-05-30T07:20:14Z",
    "title_canon_sha256": "72f41925e1ec4e63c6e0f2ef6196001ac6d67785c8cfc4f449963b0679b4f805"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.7024",
    "kind": "arxiv",
    "version": 1
  }
}