Pith Number

pith:3ZL56HUD

pith:2017:3ZL56HUDXF2K6S4CSZBL3FT5NV

not attested not anchored not stored refs pending

Proper quadrics in the Euclidean $n$-space

\'Akos G.Horv\'ath

arxiv:1707.01233 v1 · 2017-07-05 · 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{3ZL56HUDXF2K6S4CSZBL3FT5NV}

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	2026-05-18T00:40:53.350998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de57df1e83b974af4b829642bd967d6d5f5edb221f335916eec2c61f00f5a4dc

Aliases

arxiv: 1707.01233 · arxiv_version: 1707.01233v1 · doi: 10.48550/arxiv.1707.01233 · pith_short_12: 3ZL56HUDXF2K · pith_short_16: 3ZL56HUDXF2K6S4C · pith_short_8: 3ZL56HUD

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/3ZL56HUDXF2K6S4CSZBL3FT5NV \
  | 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: de57df1e83b974af4b829642bd967d6d5f5edb221f335916eec2c61f00f5a4dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e2aaf4626b8726ef0175f68201a882d09b7e6150385e7c67ab16f461a7e75c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2017-07-05T07:05:50Z",
    "title_canon_sha256": "bc04951743a7a4ef2503f04d3a0fffc66d47039bc08cec08889a33d8d7a3840d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.01233",
    "kind": "arxiv",
    "version": 1
  }
}