Pith Number

pith:HUQTJ3XM

pith:2010:HUQTJ3XMTPP5J7YYN7MQ7OW5XW

not attested not anchored not stored refs pending

Creating materials with a desired refraction coefficient: numerical experiments

Alexander G.Ramm, Sapto W. Indratno

arxiv:1002.3533 v1 · 2010-02-18 · math.NA · cs.NA · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HUQTJ3XMTPP5J7YYN7MQ7OW5XW}

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	2026-06-03T23:06:33.914689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d2134eeec9bdfd4ff186fd90fbaddbd986c996372ffdce05e7dbf7fbd893457

Aliases

arxiv: 1002.3533 · arxiv_version: 1002.3533v1 · doi: 10.48550/arxiv.1002.3533 · pith_short_12: HUQTJ3XMTPP5 · pith_short_16: HUQTJ3XMTPP5J7YY · pith_short_8: HUQTJ3XM

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/HUQTJ3XMTPP5J7YYN7MQ7OW5XW \
  | 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: 3d2134eeec9bdfd4ff186fd90fbaddbd986c996372ffdce05e7dbf7fbd893457

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7df2f2eaef12bec51c486d05888c1d4e8bc9b13761b74e3bda02f9355aab9445",
    "cross_cats_sorted": [
      "cs.NA",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2010-02-18T14:33:43Z",
    "title_canon_sha256": "ec19f11204db7bfeebd8ebb2ea519c4fa62e84361f9b105c8c288f6ead60eb44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.3533",
    "kind": "arxiv",
    "version": 1
  }
}