Pith Number

pith:3UYHATQD

pith:2016:3UYHATQDQWOWCHWT6NOVBQB4DP

not attested not anchored not stored refs pending

Prescribed Gauss curvature problem on singular surfaces

Francesca De Marchis, Isabella Ianni, Teresa D'Aprile

arxiv:1612.03657 v2 · 2016-12-12 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UYHATQDQWOWCHWT6NOVBQB4DP}

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	2026-05-18T00:52:30.725696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd30704e03859d611ed3f35d50c03c1bf401024352c1c75e5b519b05ad5a3b9d

Aliases

arxiv: 1612.03657 · arxiv_version: 1612.03657v2 · doi: 10.48550/arxiv.1612.03657 · pith_short_12: 3UYHATQDQWOW · pith_short_16: 3UYHATQDQWOWCHWT · pith_short_8: 3UYHATQD

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/3UYHATQDQWOWCHWT6NOVBQB4DP \
  | 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: dd30704e03859d611ed3f35d50c03c1bf401024352c1c75e5b519b05ad5a3b9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31b169395d3fadec3d3851d2a89ac48a872c123f29a3b6be1ae1fdec7598c8a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2016-12-12T13:06:40Z",
    "title_canon_sha256": "1b9295db503f4fd08d1e5eeee8f9e0584d2b7ed1527fdaac20da217b7c2df1db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.03657",
    "kind": "arxiv",
    "version": 2
  }
}