Pith Number

pith:L5Q5SRRR

pith:2014:L5Q5SRRRTMPXQPZSW5GVBGN5D7

not attested not anchored not stored refs pending

Extremal Configuration of Robot Arms in Three Dimensions

Dirk Siersma

arxiv:1403.5913 v1 · 2014-03-24 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L5Q5SRRRTMPXQPZSW5GVBGN5D7}

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	2026-05-18T01:25:24.752003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f61d946319b1f783f32b74d5099bd1fe296f8ebbf011ec29f44dbc3b2c0ed6f

Aliases

arxiv: 1403.5913 · arxiv_version: 1403.5913v1 · doi: 10.48550/arxiv.1403.5913 · pith_short_12: L5Q5SRRRTMPX · pith_short_16: L5Q5SRRRTMPXQPZS · pith_short_8: L5Q5SRRR

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/L5Q5SRRRTMPXQPZSW5GVBGN5D7 \
  | 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: 5f61d946319b1f783f32b74d5099bd1fe296f8ebbf011ec29f44dbc3b2c0ed6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5dca6d9e47ac7c478424230cf034571fb466816d252e036359ad09c0ef92445f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2014-03-24T11:10:29Z",
    "title_canon_sha256": "16b17144622a932aec50c221948738ba7e49ef7ec9de4efd6688740a74c3687c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5913",
    "kind": "arxiv",
    "version": 1
  }
}