Pith Number

pith:LMKDGE4F

pith:2025:LMKDGE4FABXREDKLQ2RPJ7KZEY

not attested not anchored not stored refs pending

Stereographic Projections on Some Quadric Surfaces

R.B. Leal, T.F. Cruz, W.F.C. Barboza

arxiv:2506.08289 v1 · 2025-06-09 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LMKDGE4FABXREDKLQ2RPJ7KZEY}

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	2026-07-05T11:18:47.498975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b14331385006f120d4b86a2f4fd5926173bc5bf00d0b70eee27995aeee2c681

Aliases

arxiv: 2506.08289 · arxiv_version: 2506.08289v1 · doi: 10.48550/arxiv.2506.08289 · pith_short_12: LMKDGE4FABXR · pith_short_16: LMKDGE4FABXREDKL · pith_short_8: LMKDGE4F

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/LMKDGE4FABXREDKLQ2RPJ7KZEY \
  | 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: 5b14331385006f120d4b86a2f4fd5926173bc5bf00d0b70eee27995aeee2c681

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "325e0e62961fe8f7a0d5c4cdc5b60f8aad9c25da374e50766344185510a97801",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2025-06-09T23:38:51Z",
    "title_canon_sha256": "420bb98197320f7914dfaa3e972f5d20a77f6ec6483412fcc84c0adf875fccba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.08289",
    "kind": "arxiv",
    "version": 1
  }
}