Pith Number

pith:MZ7IAS6P

pith:2013:MZ7IAS6PIX7BCEKOGKT2CSBF4N

not attested not anchored not stored refs pending

Regularity of shadows and the geometry of the singular set associated to a Monge-Ampere equation

Emanuel Indrei, Levon Nurbekyan

arxiv:1311.5865 v1 · 2013-11-22 · math.AP · math.CA · math.FA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MZ7IAS6PIX7BCEKOGKT2CSBF4N}

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	2026-05-18T03:06:23.043126Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

667e804bcf45fe11114e32a7a14825e3774aa8a58f82c7659da17104edd2f52b

Aliases

arxiv: 1311.5865 · arxiv_version: 1311.5865v1 · doi: 10.48550/arxiv.1311.5865 · pith_short_12: MZ7IAS6PIX7B · pith_short_16: MZ7IAS6PIX7BCEKO · pith_short_8: MZ7IAS6P

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/MZ7IAS6PIX7BCEKOGKT2CSBF4N \
  | 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: 667e804bcf45fe11114e32a7a14825e3774aa8a58f82c7659da17104edd2f52b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db4fc9a22a7b6386e5e084962cf82e8efb3d7ab11e713c904b0181573656866b",
    "cross_cats_sorted": [
      "math.CA",
      "math.FA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2013-11-22T20:11:45Z",
    "title_canon_sha256": "58be4a257bf26e1c078d7713905bc44875436822f1b0d546fe0d4d232b62f9c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.5865",
    "kind": "arxiv",
    "version": 1
  }
}