Pith Number

pith:TT7G54C5

pith:2015:TT7G54C5XE6SDZBHN2Y3QQRL76

not attested not anchored not stored refs pending

Isometric Immersions of Surfaces with Two Classes of Metrics and Negative Gauss Curvature

Dehua Wang, Feimin Huang, Wentao Cao

arxiv:1502.01905 v2 · 2015-02-06 · 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{TT7G54C5XE6SDZBHN2Y3QQRL76}

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	2026-05-18T01:29:03.467513Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cfe6ef05db93d21e4276eb1b8422bffbf2f8f669f41f6f569402041befb04d7

Aliases

arxiv: 1502.01905 · arxiv_version: 1502.01905v2 · doi: 10.48550/arxiv.1502.01905 · pith_short_12: TT7G54C5XE6S · pith_short_16: TT7G54C5XE6SDZBH · pith_short_8: TT7G54C5

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/TT7G54C5XE6SDZBHN2Y3QQRL76 \
  | 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: 9cfe6ef05db93d21e4276eb1b8422bffbf2f8f669f41f6f569402041befb04d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff1390f10d653bc8bc6e2bc4539d37e0acbd3ef5e6e48068ee56a54b67377ac6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-02-06T14:48:36Z",
    "title_canon_sha256": "d87f48e649f0ed3cec3ec725353b18dabf21f7cf6de4e85a1cfb7fe8883e1958"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01905",
    "kind": "arxiv",
    "version": 2
  }
}