![PDF] Relations between closed string amplitudes at higher-order tree level and open string amplitudes | Semantic Scholar PDF] Relations between closed string amplitudes at higher-order tree level and open string amplitudes | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/b3f70496ce590409068fa21e25ce4c6abb9d8af1/4-Figure1-1.png)
PDF] Relations between closed string amplitudes at higher-order tree level and open string amplitudes | Semantic Scholar
![How does a string's oscillation determine what particle it is? What would an up quark string oscillation look like? - Quora How does a string's oscillation determine what particle it is? What would an up quark string oscillation look like? - Quora](https://qph.cf2.quoracdn.net/main-qimg-908110d99795ba861a2ad75cb18ca64e.webp)
How does a string's oscillation determine what particle it is? What would an up quark string oscillation look like? - Quora
![Stair World on Twitter: "We have had a few customers this week asking us the difference between a standard closed string and a cut string - Well here you go :-) Simply, Stair World on Twitter: "We have had a few customers this week asking us the difference between a standard closed string and a cut string - Well here you go :-) Simply,](https://pbs.twimg.com/media/DZcWjhsW4AApHDv.jpg)
Stair World on Twitter: "We have had a few customers this week asking us the difference between a standard closed string and a cut string - Well here you go :-) Simply,
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