Pith Number

pith:TFEYUQTH

pith:2017:TFEYUQTHPOYSFDNLD5R6UYW3AR

not attested not anchored not stored refs pending

Changing Views on Curves and Surfaces

Bernd Sturmfels, Kathl\'en Kohn, Matthew Trager

arxiv:1707.01877 v2 · 2017-07-06 · math.AG · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TFEYUQTHPOYSFDNLD5R6UYW3AR}

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	2026-05-18T00:30:50.631393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99498a42677bb1228dab1f63ea62db04594898f4eeb57526c372c083116c8708

Aliases

arxiv: 1707.01877 · arxiv_version: 1707.01877v2 · doi: 10.48550/arxiv.1707.01877 · pith_short_12: TFEYUQTHPOYS · pith_short_16: TFEYUQTHPOYSFDNL · pith_short_8: TFEYUQTH

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/TFEYUQTHPOYSFDNLD5R6UYW3AR \
  | 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: 99498a42677bb1228dab1f63ea62db04594898f4eeb57526c372c083116c8708

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e53b4caea79b953ed38ad96085e852d3e79e42bf73220a15acd6ef4b8574a3f3",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-07-06T17:34:27Z",
    "title_canon_sha256": "4210967c516f039d3442bd8efa120105aa0165ebe1863cb1593c3a649ca516f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.01877",
    "kind": "arxiv",
    "version": 2
  }
}