Pith Number

pith:DKYNMVYK

pith:2019:DKYNMVYKIMSCJX2ZFS3MQA3LIF

not attested not anchored not stored refs pending

On the Complexity of Computing the Topology of Real Algebraic Space Curves

Jin-San Cheng, Kai Jin

arxiv:1901.10317 v1 · 2019-01-28 · cs.SC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DKYNMVYKIMSCJX2ZFS3MQA3LIF}

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	2026-05-17T23:55:15.618331Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ab0d6570a432424df592cb6c8036b4172e118fe319766a839faac1a0e8ee157

Aliases

arxiv: 1901.10317 · arxiv_version: 1901.10317v1 · doi: 10.48550/arxiv.1901.10317 · pith_short_12: DKYNMVYKIMSC · pith_short_16: DKYNMVYKIMSCJX2Z · pith_short_8: DKYNMVYK

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/DKYNMVYKIMSCJX2ZFS3MQA3LIF \
  | 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: 1ab0d6570a432424df592cb6c8036b4172e118fe319766a839faac1a0e8ee157

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66d2ba7e4529252f6c276367344488bb58c26812580f05085f9d43c7db7c897b",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2019-01-28T10:38:46Z",
    "title_canon_sha256": "1fc31b47f4f146f87c1bf4123c38d6418081d6cf8bec9a2dd0af394d3e4c855e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.10317",
    "kind": "arxiv",
    "version": 1
  }
}