Pith Number

pith:NBNQC3RI

pith:2014:NBNQC3RIOPTOFQ3TYXUDRMA6YP

not attested not anchored not stored refs pending

Determining surfaces of revolution from their implicit equations

2) ((1) NTIS -- New Technologies for the Information Society, Czech Republic), Czech Republic (2) Department of Mathematics, Faculty of Applied Sciences, Jan Vr\v{s}ek (1), Miroslav L\'avi\v{c}ka (1, Plze\v{n}, University of West Bohemia

arxiv:1407.2723 v1 · 2014-07-10 · cs.SC · cs.GR · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NBNQC3RIOPTOFQ3TYXUDRMA6YP}

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	2026-05-18T02:47:53.819438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

685b016e2873e6e2c373c5e838b01ec3f8fb24f977f30b45c6b06664d0144113

Aliases

arxiv: 1407.2723 · arxiv_version: 1407.2723v1 · doi: 10.48550/arxiv.1407.2723 · pith_short_12: NBNQC3RIOPTO · pith_short_16: NBNQC3RIOPTOFQ3T · pith_short_8: NBNQC3RI

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/NBNQC3RIOPTOFQ3TYXUDRMA6YP \
  | 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: 685b016e2873e6e2c373c5e838b01ec3f8fb24f977f30b45c6b06664d0144113

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6056be9e763217d21ba06de384b236c5880ad96bfa6b61a2019a93ad012b2810",
    "cross_cats_sorted": [
      "cs.GR",
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2014-07-10T08:24:59Z",
    "title_canon_sha256": "a9f03eb64bbf62ca3cb9104c9a50f3a8d5fe5da9c28232e22d2f96a66459d11c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2723",
    "kind": "arxiv",
    "version": 1
  }
}